6 circuits on board TCM label copy: Piece of fixed store. Read at .8 microseconds. The fixed store had 8K words (50 bits) which housed permanent programs called "extra codes," such as arithmetic functions. Courtesy of Robert Hopgood, Rutherford Laboratories, Oxfordshire. 2 c. (1958-1966)
Date
1962
Manufacturer
Ferranti Ltd.
Place Manufactured
Manchester, UK
Identifying Numbers
Model number
Atlas I
On a sticker on the circuit side of board
Other number
82 B
On component side at far lower left corner
Other number
822A
On component side at far lower left corner
Other number
GPC 1820-98/7
On component side at lower left edge
Other number
GPC 1822A/4
On component side at lower left edge
Serial number
441-822A
Dimensions
overall: 1/2 in x 8 in x 5 in
Category
Component: circuit board / module
Subject
Atlas (computer); Ferranti; University of Manchester; Kilburn, Tom