Mark Simpson, CC BY-SA 2.0, via Wikimedia Commons
Type: Electronic digital computer
Presentation and Sale Period: Ran its first program on June 21, 1948; not commercially sold (only one unit produced)
Dimensions and Weight: 5.2 metres in lenght, 2.2 metres in height, weighed nearly a ton
Processor: none
Memory: 32 words (Williams tubes)
Storage Media: none
Operating System: none
Notes: SSEM stands for "Small-Scale Experimental Machine". It was primarily used to test the Williams tube, history's first random-access memory (RAM) type.
