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Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips

A DIY 8-bit computer built mostly with discrete logic chips
ScalingFactor is an open-source printed circuit board by Trilobyte-CPU, from the Trilobyte-CPU/8-bit-computer repository on GitHub. It is a 2-layer board of 129 × 24.6 mm with 14 parts on 39 nets, routed with 825 tracks and 76 vias.
It is built around the 74LS245SC. Its parts include 6 ICs, 4 connectors and 3 capacitors.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 74LS245 | Package_SO:SO-20_5.3x12.6mm_P1.27mm | U1, U2, U3, U4, U5, U6 |
| 3 | C_Small | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3 |
| 2 | Conn_01x16 | Connector_PinHeader_2.54mm:PinHeader_1x16_P2.54mm_Vertical | J3, J4 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | Conn_01x05 | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J2 |
The 13 most common of 14 parts.

Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips

Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips

Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips

Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips

Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips

Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips

Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips

Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips

Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips

Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips

Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips

Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips


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tjboldt/Apple2-IO-RPi
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It measures 129 × 24.6 mm and has 2 copper layers, 1.6 mm thick.
14 parts, built around the 74LS245SC. 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.
From the Trilobyte-CPU/8-bit-computer repository on GitHub, at the commit this page was made from: the board is PCBs/99_IN PROGRESS/Displacement/SPR-Displacement-ScalingFactor/ScalingFactor.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask Trilobyte-CPU before reusing the design.