I can remember owning a Fidelity chess challenger created in 1976 that had more capabilities than the computer that helped land us on the moon.
I bought mine about 1981, it was originally based on an 8088 processor. It took many years before Big Blue beat an international grandmaster, 1997. Now there are some crazy good chess engines.
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Fidelity chess computers won the first four World Microcomputer Chess Championships: Chess Challenger won in London 1980, Fidelity X in Travemünde 1981, Elite A/S in Budapest 1983, and Elite X in Glasgow 1984. Moreover, they won the four United States Open Computer Chess Championships, all held in Mobile, Alabama, in 1985, 1986, 1987 and 1988 (Chessmaster 2100) . A remarkable performance is its first place in the ACM 1988 Championship, tied with Deep Thought.”
Now as far as home computers it was a Commodore 64 followed by early IBM’s then a clone 286, 386 etc. I can recall graduating from a composite color monitor on an Atari to EGA, VGA, and SVGA on up. I dismantled an early EGA monitor, reverse engineered it and got a company into a computer monitor repair business. Companies like IBM did not supply schematics, nor did those made in other countries. My son began with computers at age four and that led to his profession.