Essay About Harry Huskey And Stevce Jobs

First Computers and Os
First Computers and Os
1948 on june 21, the manchester mark 1 becomes the first operationak stored-pogram digital computer
baby machine
1950 harry huskey desing the SWAC that used 2300 vacuum tubes it had 256 word of memory each word being 37 bits
its operations was add, subtract, multiply, comparasion, data extraction, input and output.
1952 illiac build with 2800 vacuum tubes and weighed about 5 tons. had a 5k main memmory and 64 k drum memory.
1954 The UNIVAC 1103A had up to 12,288 words of 36 bit magnetic core memory,
in one to three banks of 4,096 words each
1960 the pdp-1 fisrt commersiol computer with monitor and keyboard input. It had an 18-bit word and had 4K
words as standard main memory. The magnetic core memorys cycle time
was 5 microseconds
1961 the ibm 7030 had a cost of 13.5 million it was the fastes computer in the world from 1961 until 1964.
1964 cdc 6600 by seymour cray with a speed of 9 megaflops was consider fist successful supercomputer
1970 unix was devolop by dennis ritchie and kenneth thomsom.
1976 stevce jobs and steve wozniak buildd the apple 1 which consist of circuit board it was a personal computer.