Instruction-Register
About the Instruction-Register PCB
Instruction-Register is an open source PCB design by DutchMaker, published on GitHub. It is a 2-layer board measuring 53.3 × 52.1 mm, with 6 components from 6 distinct parts.
Other key parts include the 74x377 and 74x245. By type, the board carries 2 ICs, 2 connectors and 1 resistor.
From the project
Building a computer from scratch using 74xx logic chips
- Add ./Libraries/74xx-Computer-Symbols.lib as global Symbol library to KiCad (Eeschema) - Add ./Libraries as global Footprint library to KiCad (Pcbnew) - PCBs are initially autorouted using ./Libraries/freeRouting.jar and traces are enhanced manually
There are a number of deviations and errors that were found in schematic/PCB designs after PCB production. They are listed here if they were not fixed in the schematic/PCB design files.
Main components on the Instruction-Register
Instruction-Register bill of materials (BOM)
6 components, 6 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74x377 | DIP-20_W7.62mm_Socket | U1 |
| 1 | 74x245 | DIP-20_W7.62mm_Socket | U2 |
| 1 | Conn_01x12_Male | PinHeader_1x12_P2.54mm_Vertical | J1 |
| 1 | Conn_01x08_Male | PinHeader_1x08_P2.54mm_Vertical | J2 |
| 1 | LED-BAR | HDSP-4830 | BAR1 |
| 1 | 470 | R_Array_SIP9 | RN1 |
Instruction-Register design files
The KiCad project lives in the DutchMaker/TTL-computer repository on GitHub; these links point at the commit this page was built from.
Instruction-Register: common questions
How big is the Instruction-Register PCB?
The Instruction-Register measures 53.3 × 52.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Instruction-Register?
6 components, from 6 distinct parts. The full bill of materials is listed on this page.
Where can I download the Instruction-Register design files?
From the DutchMaker/TTL-computer repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Instruction-Register design in my own project?
The repository has no license, so all rights stay with DutchMaker. Use it as a reference, and ask the author before reusing the design.
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