COMPUTER FUNDAMENTALS

Detailed explanation-1: -Colossus is thus regarded as the world’s first programmable, electronic, digital computer, although it was programmed by switches and plugs and not by a stored program. A Colossus Mark 2 computer being operated by Wrens The slanted control panel on the left was used to set the “pin” (or “cam") patterns of the Lorenz.

Detailed explanation-2: -Engineer Tommy Flowers, head of the Switching Group at Dollis Hill, invented Colossus. Having first been approached by Bletchley Park to design equipment for decoding Enigma, he was later given the job of debugging Robinson’s “combining unit” (logic unit).

Detailed explanation-3: -Others cite the British contender Colossus, a development team headed by Tommy Flowers demonstrated Colossus to be working on December 8, 1943. The world’s first electronic digital computer that was programmable, it ran at a remarkable (for the time) 5.8 MHz.