6 layers313 × 259.5 mm
Open8-vga motherboard
adham404/Open8-VGA
An 8-bit computer from 74HC logic: microcoded CPU, VGA, PS/2, on-board editor and assembler. Play it in your browser.
322 parts3MIT
Boards using the CD74HC283E
7 boardsBoards in 7 GitHub repositories, designed in KiCad, that use the CD74HC283E by Texas Instruments (-55℃~+125℃ 2V~6V 4 Full Adder DIP-16 Specialty Logic ROHS). See how each wires it, with its parts, size, README and files; the CD74HC283E’s symbol, footprint and pinout are on its own page.
- 2 layers238.8 × 120.6 mm
- 2 layers166.4 × 181.6 mm
Calculator ver1
PhdWizards/4-Bit-Discrete-Transistor-Adder
The core 4-bit binary adder is implemented entirely using discrete transistor-resistor logic. The resulting 5-bit binary value is converted to BCD using 74HC-series logic and displayed on two 7-segment displays.
308 parts - 2 layers80 × 75 mm
- 2 layers200 × 200 mm
- 2 layers61.8 × 82.3 mm
TaschenBit
Lichtwerkstatt/ElectronicTinkerStuff
A little Repository with all our small electronic projects
18 partsMIT - 2 layers320 × 200 mm
