4116 memory tester shield kit for Arduino Uno.    Test 4116 ram that is used in vintage arcade games, pinball, and other older devices.   Arduino Uno not included.   Requires soldering and a PC for configuring the Arduino.

Source code download 

https://github.com/cpyne/4116MemTest

Assembly Instructions

https://bsgelectronics.com/4116-memory-tester-video-and-assembly-instructions