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.

1953

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 memory's 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.

1977