Quantity   Component name
1 × Texas Instruments PC16550D UART interface chip
2 × Texas Instruments SN54LS181 4-Bit ALU
4 × Texas Instruments SN54ACT245 8-bit bus transceiver with 3-state outputs
2 × Texas Instruments SN74ALS867A 8-bit counter
9 × Texas Instruments SN54ALS996 8-bit Register with readback and tri-state outputs
2 × Alliance Memory AS6C62256 32K x 8-bit SRAM
2 × Atmel AT28C64B 8K x 8-bit EEPROM