Quantity   Component name
1 × Teensy 4.1 Microprocessor module from PJRC
3 × SN74LVC8T245PWR Logic ICs / Receivers, Transceivers. Use for its level shifting capability
1 × CD4050 Level shifter. The HP85 computers uses a 4 phase 12 V clock system.
1 × ESP32-Wroom-32D Added WiFi, because why not
2 × WS2812B RGB LEDs because computers need flashing lights
1 × QWIIC connector for future I2C peripherals