4 layers207 × 132.1 mm
Alu
bmichini/nandirl
Real-life open hardware implementation of the nand2tetris “Hack” computer
293 parts4
4 layers175.3 × 72.4 mm
Program counter
bmichini/nandirl4Real-life open hardware implementation of the nand2tetris “Hack” computer
- Size
- 175.3 × 72.4 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 112
- Nets
- 405
- Pads
- 1,171
- Tracks, vias
- 2,294, 417
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 15 Mar 2020
- Updated
- 31 Mar 2026
Overview
Program counter is an open-source printed circuit board by bmichini, from the bmichini/nandirl repository on GitHub. It is a 4-layer board of 175.3 × 72.4 mm with 112 parts on 405 nets, routed with 2,294 tracks and 417 vias.
Its parts include 76 ICs, 16 resistors, 16 diodes, 2 capacitors and 1 connector.
README
README.mdnandirl
Project documentation can be found at bmichini.github.io/nandirl
License
The hardware design files and software tools found in this repository are open source and released under the Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0)
Parts
112| Qty | Value | Footprint | References |
|---|---|---|---|
| 76 | SN74HCS00PWR | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U1, U2, U10, U11, U12, U13, U14, U15, U16, U17, U18, U19, U20, U21, U22, U23 +60 |
| 16 | 1K | Resistor_SMD:R_1206_3216Metric | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16 |
| 16 | LED | LED_THT:LED_D5.0mm | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16 |
| 1 | 100nF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C2 |
| 1 | 100uF | Capacitor_THT:CP_Radial_D8.0mm_P2.50mm | C1 |
| 1 | DB37_Male | Connector_Dsub:DSUB-37_Male_Horizontal_P2.77x2.84mm_EdgePinOffset7.70mm_Housed_MountingHolesOffset9.12mm | J1 |
| 1 | LOGO | nandirl logo:logo_sm | G*** |
Questions
How big is the Program counter PCB?
It measures 175.3 × 72.4 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Program counter use?
112 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Program counter KiCad files?
From the bmichini/nandirl repository on GitHub, at the commit this page was made from: the board is hardware/program_counter/program_counter.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Program counter design in my own project?
Its repository states no licence, so its author keeps all rights: ask bmichini before reusing the design.
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