En door zo'n opmerkingen sla ik dan aan het googlen...
MANIAC, along with IAC and ENIAC, was used to perform the engineering calculations required for building the bomb. It took sixty straight days of processing, all through the summer of 1951.
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Computing and the Manhattan Project
Dus een combinatie van 3 computers.
The basic machine cycle was 200 microseconds (20 cycles of the 100 kHz clock in the cycling unit), or 5,000 cycles per second for operations on the 10-digit numbers. In one of these cycles, ENIAC could write a number to a register, read a number from a register, or add/subtract two numbers.
A multiplication of a 10-digit number by a d-digit number (for d up to 10) took d+4 cycles, so a 10- by 10-digit multiplication took 14 cycles, or 2,800 microseconds—a rate of 357 per second. If one of the numbers had fewer than 10 digits, the operation was faster.
Division and square roots took 13(d+1) cycles, where d is the number of digits in the result (quotient or square root). So a division or square root took up to 143 cycles, or 28,600 microseconds—a rate of 35 per second. (Wilkes 1956:20[16] states that a division with a 10 digit quotient required 6 milliseconds.) If the result had fewer than ten digits, it was obtained faster.
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ENIAC
“Because of the slow speed of MANIAC (about 10,000 instructions per second) we had to restrict play to a 6 by 6 board, removing the bishops and their pawns. Even then, moves averaged about 10 minutes for a two-move look-ahead strategy.”
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Computing at Los Alamos in the 1940s and 1950s
Over de IAC heb ik niet snel iets gevonden maar het gaat dus over een duizenden instructies per seconde. Bij de eerste RPi waren het al 10-tallen miljoenen instructies per seconde. De RPi 4 gaat daar vlot over

Geen idee waarom ik hier eigenlijk tijd in stop
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Oh ja, de Raspberry Pi is ook iets kleiner:
Called MANIAC, for Mathematical Analyzer, Numerical Integrator, and Computer, it was meant to improve in every way upon ENIAC. The Penn machine had 17,500 vacuum tubes, each prone to fizzling; the Institute’s, only 2,600. ENIAC was 100 feet long and weighed 30 tons; MANIAC was a single 6-foot-high, 8-foot-long unit weighing 1,000 pounds. Most crucially, MANIAC stored programs, something ENIAC’s creators had pondered but not attempted.
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Daybreak of the Digital Age
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