Mark I
In my articles, I wrote about ENIAC and EDVAC; computers were created during World War II at the universities of Pennsylvania and Princeton.
Another place where work on computing machines was known to us was Harvard. The Mark I computer or IBM Automatic Sequence Calculator was launched in 1944. The device counted among the first computers in history. Mark I was built from 765 thousand. electromechanical parts, 800 kilometers of wires with 3 million connections, and 3.5 thousand multiprocessor relays. The machine was 16 m long and 2.5 m high, weighing over 4.5 tonnes. It was the largest electromechanical calculator. It had 60 sets of 24 switches for manual data entry, each of which stored 72 registers with 23 digits. He read the instructions from perforated paper tapes. For the first time in a counting machine, the data memory is separated from the program memory.