Feeds, speeds and specifications

ASCC Statistics

Length:   51 feet.
 
Height:   8 feet.
 
Weight:   9,445 pounds.
 
Total Parts:   765,299.
 
Counter Positions:   2,204 (including 72 storage containers of 24 column capacity).
 
Relays:   3,304.
 
Circuit Breakers:   225.
 
Constant Value Switches of 24 Column Capacity:   60 (total number of switches: 1,474).
 
Miles of Wire:   530.
 
Taper Plug Connections (electrical):   175,000.
 
Ball Bearings:   1,210.
 
Value Tape Mechanisms:   3.
 
Sequence Tape Mechanisms:   1.
 
Electromatic Typewriters:   2.
 
Card Feed Mechanisms:   2.
 
Summary Punch:   1.
 
Full Capacity Multiplying:   5.7 seconds.
 
Full Capacity Dividing:   15.3 seconds.
 
Paper Tape Width:   3.25 inches.

By contrast, the ASCC's "successor" -- the IBM Selective Sequence Electronic Calculator (SSEC) of 1948 -- contained 21,400 relays and 12,500 vacuum tubes. Its electronic arithmetic circuits could perform 14-by-14 decimal multiplication in 20 milliseconds, division in 33 milliseconds and addition or subtraction of 19-digit numbers in only 0.3 milliseconds. The SSEC was more than 250 times faster than the ASCC.


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