Ohio Scientific Challenger 1P, Apple II+, TRS-80 Model 1, Atari 400, Osborne 1a, System-80/Video Genie/PMC-80, IBM-5150 (IBM-PC), ZX-81, TRS-80 Colour Computer 1, Vic-20, Epson HX-20, BBC-B, ZX-Spectrum, Kaypro II, Eaca Colour Genie, RX-8800, Apple IIe, Atari 800XL, Tandy Model 100, Commodore 64, Commodore 64C, Commodore SX-64, Spectravideo 318, Mattel Aquarius, Sinclair QL, Atari 130XE, Apple IIe Platinum, IBM PS/2 30-286, Compaq SLT/286, Amiga 500, Atari 1040ST, Mac SE/30, Mac Classic II, Mac Powerbook 145B, Generic 386DX-40

IBM 5150 (IBM-PC)

Released in 1981 the appearance of the much anticipated 16-bit Intel 8088-driven IBM-PC on the world stage saw the microcomputer industry come of age and win the acceptance of big business. Things would never be the same afterwards! This model and it's subsequent clones for better or worse, established a software and hardware standard the legacy of which is with us today. It also ensured the dominance of Microsoft, the owner of PC-DOS and MS-DOS, the native operating system for this class of machine.

Much to it's credit, IBM embraced open architecture much as the Apple ][ had done. This means every man and his dog could start producing add-ons (or clone the machine by reverse engineering the code). Every man and his dog could also write software for the new machine knowing that business would be buying these units in droves. As the old saying went back then "No one ever got fired for buying IBM".

The release was accompanied by a slick marketing campaign utilising a Charlie Chaplin-look alike mime artist. It was novel and appealing.

I've got a lot of fondness for this model as I used a monochrome one at work regularly for 2 years back in 1984-1986. I love the sturdy feel of the computer. The monitor display was always steady as a rock and crystal clear. Very unlike the home computers I was used to up to that point. Also, the keyboard! Although noisy (clicky), this was a joy to use with very solid feel to it. The only negative was the small shift keys, which were not quite where you expected them to be. Later PCs changed this configuration to a more standard one. It wasn't flashy but that machine spoke of quality workmanship. So it should! If I remember rightly it was close on $12,000 NZ dollars when purchased and that was way back in 1984!.

This particular unit, a gift from a U.S.A. collector (thanks Eric), stumps up with 256k RAM, a Colour Graphics adaptor (CGA), colour screen and and two 360k floppy drives. It's in perfect condition physically and is complete with all its manuals and original PS-DOS 2.1 disks. I've added an original asynchronous communications card to it as well.

In the main this unit works fine although there have been issues. At one point the A drive failed to read and write properly. Disassembly revealed a sticky drive-arm shaft which was subsequently cleaned and re-lubed thereby solving the problem. Also, the monitor started to play up a few months after I got the machine. It would simply switch off for no apparent reason. Eventually I plucked up the courage to dive into the monitor and fix the problem. It's now good as new!

One of my most prized computers.

Want to know more about this micro? Google is your friend but also check out the link below...

http://www.ibm5150pc.com/

This page last edited 29th December, 2008

Comments welcome...

Comments by Haloscan