sap-plus
TomNisbet
Simple As Possible (SAP) 8-bit computer with a modular PCB design
Components (18)
| Reference | Value | Description |
|---|---|---|
| U1 | 74LS377 | 8-bit Register |
| U2 | 74LS161 | Synchronous 4-bit programmable binary Counter |
| U3 | 74LS138 | Decoder 3 to 8 active low outputs |
| U4 | 28C256 | Paged Parallel EEPROM 256Kb (32K x 8), DIP-28/SOIC-28 |
| U5 | NE555P | Precision Timers, 555 compatible, PDIP-8 |
| U6-U9 | D148K | One digit 7 segment yellowish-green LED, low current, common cathode |
| C1-C4 | 0.1uF | |
| C5,C6 | 0.01uF | Unpolarized capacitor, small symbol |
| D1 | WRITE | Light emitting diode, small symbol |
| J1,J2 | Bus | |
| J3 | P27 | Generic connector, single row, 01x03, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J4 | P1 | Generic connector, single row, 01x03, script generated (kicad-library-utils/schlib/autogen/connector/) |
| R1-R8 | R_SEG | Resistor, small US symbol |
| R9,R10 | 10K | Resistor, small US symbol |
| R11,R12 | 1K | Resistor, small US symbol |
| R13 | R_RED | Resistor, small US symbol |
| RV1 | 1M | |
| SW1,SW2 | SW_SPDT | Switch, single pole double throw |