This is a blank PCB only for building a Manual PROM Programmer for 82s123, 82s23, 74s288, and 74s188 chips.   This programmer is designed to be powered from a PC power supply or arcade power supply with 12v and 5v lines.  Assembly requires soldering and basic electronics experience. 

This sale is for the Board ONLY!   You will need to purchase all other components separately.    See the link below for a video, more pictures, and complete parts list below for a list of components that you can buy at Digikey, Ebay, or others.   

https://bsgelectronics.com/a-manual-programmer-for-82s123-and-82s23-prom-chips

Feel free to send a message with any questions about this board, assembly, or use.

Are you unable to order from your country?  Please message me

NOTE - Please notice the orientation of the blue buttons when assembling this board.   Programmer will not function correctly if buttons are installed backwards.

NOTE #2 - PROM chips are one time write only.   Used chips are great for testing purposes before programming a new blank.