Quantity   Component name
2 × GAL22V10 Logic ICs / Programmable Logic: PLDs
1 × Atmega 644-20PU Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
1 × 40 Pin Ribbon Cable Connector to the TRS-80 Model 1 Expansion Port. About 8 inches?
1 × Crimp 40 Pin Edge Connector For connecting to the Model 1 Expansion Port.
1 × 40 PIN IDC Box Header Backside of Talker/80, cable connection to the Model 1 Expansion port.
1 × 1 Female IDC 40 Pin Crimp Connector Other side of the Edge Connector cable, plugs into the Talker/80 IDC box header.
1 × Push Button Reset Push Button
3 × Trimmer / Potentiometers See BOM. 2 for Audio Mixing (Speech, Cassette Sound), one for output signal level.
1 × LM741 Op-amp for audio signal summing / mixing.
1 × 20 Mhz crystal AVR / Atmega clock
1 × Mikroe MIKROE-2253 TextToSpeech click https://www.mouser.de/new/mikroe/mikroelektronika-texttospeech-click/
1 × PAM8403 Mini Amplifier Board https://www.ebay.com/itm/5pcs-PAM8403-Mini-2-Channel-Stereo-3W-Class-D-Audio-Power-Amplifier-Module-Board/192065661616?hash=item2cb8016ab0:g:E5EAAOSwopRYZovz
3 × LED Red, Green, Blue
1 × 2-Position DIP Switch For initial mode selection
3 × Audio Stereo Jack Sockets
1 × 5V Barrel Jack 5V Power Supply, Tip Polarity = +
1 × Resistors, Capacitors, ... A lot of them ;-)