RCA Corporation, originally Radio Corporation of America.
RCA was Datanetics’ first customer, purchasing a single batch-fabricated array keyboard for $600 in 1967. At one point, Meryl Miller from Datanetics reported that they provided a small order of keyboards to RCA in 1968; Datanetics were reportedly told that “a few of them were used aboard U.S. Navy submarines.” Later he suggested that RCA only ordered prototypes or samples.
VP-600 is a series of flat-surface membrane keyboards. Advertised at the same time as their VP-3000 series data terminals, the keyboards and terminals were identical in size and shape. VP-600 series keyboards were in effect a simpler derivative of the terminals. The VP-3300 User’s Manual (see the VP3301 page at Aaron’s Virtual Computer Museum) indicates that the membrane material is polycarbonate. A May 1980 advertisement in Byte Magazine (vol. 5 no. 5) states, ‘A finger positioning overlay combined with light positive activation key pressure gives good operator “feel,” and an onboard tone generator gives aural key press feedback.’ Flat surface keyboards tend to require high operating pressure, which the RCA advertisements suggest was not the case for the VP-3300/VP-600 keyboards. A July 1981 advertisement goes on to say that these keyboards are “redesigned for lighter key activation and improved typing capability”.
The date of introduction is a little unclear, but 1979 seems the most likely. An eBay listing for COSMAC VIP system literature included a VP-600 ASCII Encoded Keyboards brochure reported to be from 1979. The Electronic Systems Computer Products Catalog 1980 lists two models (VP-600 and VP-610) both said to be available in June 1979.
The rated lifetime for the keyboards was given as 5 million operations in 1981, and 10 million operations in 1982. Two-key rollover was provided. Output could be parallel or serial; parallel keyboards had 7-bit buffered TTL-compatible data lines, while serial output could be RS-232C, 20 mA current loop or TTL-compatible.
Variants of VP-600 were also sold as the Cardinal Technologies KB670 ASCII keyboard. The two examples depicted in the eBay listing have ambiguous manufacture dates of “88” and “108”, suggesting possibly August and October 1988. Damage to one of these units suggest that the aforementioned “finger positioning overlay” is simply an additional layer with a cutout for each key, so that the operator can feel the outline of each key. Cardinal Technologies itself was a buyout of part of RCA in 1987.
A separate eBay listing for a RCA VP601 parallel output model appears to give the FCC ID as AHG9WRVP601, an ID not found in the FCC database at present.
The following models were advertised in Electronic Systems Computer Products Catalog 1980:
|VP-600||ASCII Keyboard||Fully encoded, 128-character ASCII alphanumeric keyboard. 58 light touch keys (2 user defined). Selectable. “Upper-Case-Only”.||$49.95||$162|
|VP-610||ASCII/Numeric Keyboard||ASCII Keyboard identical to VP-600 plus 16 key numeric entry keyboard for easier entry of numbers.||$69.95||$227|
The following models were advertised in November 1982 in Computer Design magazine:
|VP 616||EIA RS232C compatible, 20 mA current loop and TTL outputs; six selectable baud rates. Standard keyboard plus 16-key calculator.||$78||$214|
|VP 611||Similar to VP 616 with 8 bit parallel output.||$59||$160|
|VP 606||Same as VP 616, less calculator keypad.||$65||$178|
|VP 601||Same as VP 611, less calculator keypad.||$49||$134|
The prices given are “OEM quantity prices”; the minimum order quantity for these prices is not stated. The “16-key calculator” of VP 616 appears to simply refer to the numeric keypad (as per the other descriptions).
All documentation was scanned by Bitsavers except where otherwise noted.
- VP-3301 data terminal advertisement, Computer Design, July 1981, page 51
- VP-600 series ASCII keyboard advertisement, Computer Design, July 1981, page 53
- VP-3300 series interactive data terminal advertisement, Computer Design, February 1982, page 190
- VP-600 series ASCII encoded keyboards advertisement, Computer Design, February 1982, page 191
- VP-3501 terminal advertisement, Computer Design, May 1982
- Terminals and keyboards advertisement, Computer Design, November 1982