A 400-point solderless breadboard used to build and test electronic circuits quickly without soldering. It provides multiple rows of spring contact holes for wiring components together using jumper leads, including dedicated connection areas for power rails and grouped row/column connections. Commonly used in Arduino and ESP32 learning setups for rapid prototyping and experimentation.
| Pin | Signal | Description |
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J1 |
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J2 |
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J3 |
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J4 |
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J5 |
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J6 |
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J7 |
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J8 |
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J9 |
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J10 |
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J11 |
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J12 |
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J13 |
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J14 |
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J15 |
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J16 |
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J17 |
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J18 |
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J19 |
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J20 |
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J21 |
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J22 |
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J23 |
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J24 |
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J25 |
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J26 |
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J27 |
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J28 |
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J29 |
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J30 |
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I1 |
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I2 |
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I3 |
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I4 |
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I5 |
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I6 |
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I7 |
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I8 |
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I9 |
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I10 |
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I11 |
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I12 |
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I13 |
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I14 |
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I15 |
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I16 |
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I17 |
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I18 |
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I19 |
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I20 |
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I21 |
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I22 |
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I23 |
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I24 |
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I25 |
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I26 |
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I27 |
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I28 |
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I29 |
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I30 |
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H1 |
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H2 |
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H3 |
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H4 |
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H5 |
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H6 |
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H7 |
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H8 |
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H9 |
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H10 |
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H11 |
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H12 |
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H13 |
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H14 |
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H15 |
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H16 |
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H17 |
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H18 |
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H19 |
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H20 |
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H21 |
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H22 |
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H23 |
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H24 |
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H25 |
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H26 |
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H27 |
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H28 |
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H29 |
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H30 |
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G1 |
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G2 |
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G3 |
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G4 |
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G5 |
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G6 |
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G7 |
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G8 |
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G9 |
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G10 |
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G11 |
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G12 |
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G13 |
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G14 |
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G15 |
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G16 |
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G17 |
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G18 |
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G19 |
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G20 |
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G21 |
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G22 |
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G23 |
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G24 |
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G25 |
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G26 |
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G27 |
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G28 |
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G29 |
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G30 |
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F1 |
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F2 |
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F3 |
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F4 |
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F5 |
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F6 |
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F7 |
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F8 |
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F9 |
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F10 |
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F11 |
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F12 |
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F13 |
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F14 |
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F15 |
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F16 |
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F17 |
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F18 |
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F19 |
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F20 |
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F21 |
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F22 |
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F23 |
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F24 |
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F25 |
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F26 |
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F27 |
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F28 |
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F29 |
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F30 |
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E1 |
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E2 |
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E3 |
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E4 |
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E5 |
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E6 |
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E7 |
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E8 |
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E9 |
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E10 |
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E11 |
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E12 |
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E13 |
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E14 |
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E15 |
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E16 |
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E17 |
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E18 |
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E19 |
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E20 |
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E21 |
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E22 |
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E23 |
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E24 |
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E25 |
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E26 |
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E27 |
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E28 |
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E29 |
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E30 |
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D1 |
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D2 |
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D3 |
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D4 |
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D5 |
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D6 |
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D7 |
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D8 |
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D9 |
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D10 |
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D11 |
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D12 |
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D13 |
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D14 |
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D15 |
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D16 |
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D17 |
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D18 |
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D19 |
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D20 |
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D21 |
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D22 |
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D23 |
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D24 |
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D25 |
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D26 |
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D27 |
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D28 |
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D29 |
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D30 |
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C1 |
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C2 |
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C3 |
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C4 |
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C5 |
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C6 |
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C7 |
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C8 |
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C9 |
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C10 |
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C11 |
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C12 |
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C13 |
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C14 |
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C15 |
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C16 |
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C17 |
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C18 |
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C19 |
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C20 |
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C21 |
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C22 |
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C23 |
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C24 |
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C25 |
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C26 |
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C27 |
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C28 |
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C29 |
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C30 |
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B1 |
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B2 |
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B3 |
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B4 |
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B5 |
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B6 |
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B7 |
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B8 |
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B9 |
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B10 |
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B11 |
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B12 |
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B13 |
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B14 |
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B15 |
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B16 |
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B17 |
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B18 |
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B19 |
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B20 |
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B21 |
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B22 |
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B23 |
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B24 |
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B25 |
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B26 |
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B27 |
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B28 |
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B29 |
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B30 |
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A1 |
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A2 |
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A3 |
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A4 |
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A5 |
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A6 |
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A7 |
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A8 |
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A9 |
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A10 |
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A11 |
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A12 |
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A13 |
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A14 |
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A15 |
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A16 |
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A17 |
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A18 |
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A19 |
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A20 |
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A21 |
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A22 |
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A23 |
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A24 |
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A25 |
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A26 |
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A27 |
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A28 |
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A29 |
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A30 |
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GND1.1 |
ground | GND power rail |
GND1.2 |
ground | GND power rail |
GND1.3 |
ground | GND power rail |
GND1.4 |
ground | GND power rail |
GND1.5 |
ground | GND power rail |
GND1.6 |
ground | GND power rail |
GND1.7 |
ground | GND power rail |
GND1.8 |
ground | GND power rail |
GND1.9 |
ground | GND power rail |
GND1.10 |
ground | GND power rail |
GND1.11 |
ground | GND power rail |
GND1.12 |
ground | GND power rail |
GND1.13 |
ground | GND power rail |
GND1.14 |
ground | GND power rail |
GND1.15 |
ground | GND power rail |
GND1.16 |
ground | GND power rail |
GND1.17 |
ground | GND power rail |
GND1.18 |
ground | GND power rail |
GND1.19 |
ground | GND power rail |
GND1.20 |
ground | GND power rail |
GND1.21 |
ground | GND power rail |
GND1.22 |
ground | GND power rail |
GND1.23 |
ground | GND power rail |
GND1.24 |
ground | GND power rail |
GND1.25 |
ground | GND power rail |
+1.1 |
power | Positive power rail |
+1.2 |
power | Positive power rail |
+1.3 |
power | Positive power rail |
+1.4 |
power | Positive power rail |
+1.5 |
power | Positive power rail |
+1.6 |
power | Positive power rail |
+1.7 |
power | Positive power rail |
+1.8 |
power | Positive power rail |
+1.9 |
power | Positive power rail |
+1.10 |
power | Positive power rail |
+1.11 |
power | Positive power rail |
+1.12 |
power | Positive power rail |
+1.13 |
power | Positive power rail |
+1.14 |
power | Positive power rail |
+1.15 |
power | Positive power rail |
+1.16 |
power | Positive power rail |
+1.17 |
power | Positive power rail |
+1.18 |
power | Positive power rail |
+1.19 |
power | Positive power rail |
+1.20 |
power | Positive power rail |
+1.21 |
power | Positive power rail |
+1.22 |
power | Positive power rail |
+1.23 |
power | Positive power rail |
+1.24 |
power | Positive power rail |
+1.25 |
power | Positive power rail |
GND2.1 |
ground | GND power rail |
GND2.2 |
ground | GND power rail |
GND2.3 |
ground | GND power rail |
GND2.4 |
ground | GND power rail |
GND2.5 |
ground | GND power rail |
GND2.6 |
ground | GND power rail |
GND2.7 |
ground | GND power rail |
GND2.8 |
ground | GND power rail |
GND2.9 |
ground | GND power rail |
GND2.10 |
ground | GND power rail |
GND2.11 |
ground | GND power rail |
GND2.12 |
ground | GND power rail |
GND2.13 |
ground | GND power rail |
GND2.14 |
ground | GND power rail |
GND2.15 |
ground | GND power rail |
GND2.16 |
ground | GND power rail |
GND2.17 |
ground | GND power rail |
GND2.18 |
ground | GND power rail |
GND2.19 |
ground | GND power rail |
GND2.20 |
ground | GND power rail |
GND2.21 |
ground | GND power rail |
GND2.22 |
ground | GND power rail |
GND2.23 |
ground | GND power rail |
GND2.24 |
ground | GND power rail |
GND2.25 |
ground | GND power rail |
+2.1 |
power | Positive power rail |
+2.2 |
power | Positive power rail |
+2.3 |
power | Positive power rail |
+2.4 |
power | Positive power rail |
+2.5 |
power | Positive power rail |
+2.6 |
power | Positive power rail |
+2.7 |
power | Positive power rail |
+2.8 |
power | Positive power rail |
+2.9 |
power | Positive power rail |
+2.10 |
power | Positive power rail |
+2.11 |
power | Positive power rail |
+2.12 |
power | Positive power rail |
+2.13 |
power | Positive power rail |
+2.14 |
power | Positive power rail |
+2.15 |
power | Positive power rail |
+2.16 |
power | Positive power rail |
+2.17 |
power | Positive power rail |
+2.18 |
power | Positive power rail |
+2.19 |
power | Positive power rail |
+2.20 |
power | Positive power rail |
+2.21 |
power | Positive power rail |
+2.22 |
power | Positive power rail |
+2.23 |
power | Positive power rail |
+2.24 |
power | Positive power rail |
+2.25 |
power | Positive power rail |
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