Commodore 64 interface data communicator

The Commodore 64 was an 8-bit home computer introduced in January 1982 by Commodore International. During the C64’s lifetime, sales totaled between 12.5 and 17 million units, making it the best-selling single PC model of all time. The Commodore cassette player/recorder (tape drive model 1530 and 1531) provided access to an inexpensive storage medium for this 8-bit home/personal computer.

The datasette (casette player/recorder) contained built-in analog to digital converters and audio filters to convert the computer’s digital information into analog sound vice versa (much like a modem does over a telephone line). Connection to the PC was done via a proprietary edge connector (Commodore 1530). This datasette was the medium of choice for several years after its launch, althought floppy disk drives were generally available.

I was build this electronic data communicator 25 years ago due to the need for fast copying of games without the use of computers. At the PCB I was connected the two cassette, one in the “play” mode, and the another in the “record” mode. The interface is build with one TTL integer circuit (SN7400), power supply for two cassette players/recorders and power supply for TTL circuit.

Two layer PCB is used, one integer circuit, two 3-pin voltage stabilizer and several passive components. This unit is maybe not so attractive to be built today, but is only example of retro electronic device who is build a quarter century before. Enjoy it.

Author: Primarius D-r Petar Avramovski M.D.

1 Comment

  1. richms September 23, 2012 6:54 am 

    Wow. I guess this predates the common in the 90’s high speed dubbing boomboxes that was how I duplicated stuff.

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