I picked this up from a friend of mine. It's a Texas Instruments Compact Computer 40 Plus. Serial number 595 date of manufacture code : X 1584 (15th Week of 1984). These were never offered for sale and all are engineering prototype units. The difference between the CC-40 and the CC-40 Plus is a DE-9 cassette interface.
Texas Instruments had reliability problems with the Hex-Bus Wafertape drive. So they never offered it to the public for sale. Because of this, the CC-40 had no media for saving data. To correct this, TI started work on the CC-40 Plus. By the time the CC-40 Plus got this far, TI was well on there way out of the consumer computer business. Rumor has it that an even more power CC-70 was in the works, but it never got past the initial early design and prototyping phase before TI pulled the plug. Later, TI would try again with the TI-74 Basicalc and the TI-95 ProCalc.
It's interesting to note that the case is not the silver plastic/metal bottom like the CC-40, but actually a two tone beige like the later 99/4A and the unreleased 99/8.
Enjoy!
Texas Instruments had reliability problems with the Hex-Bus Wafertape drive. So they never offered it to the public for sale. Because of this, the CC-40 had no media for saving data. To correct this, TI started work on the CC-40 Plus. By the time the CC-40 Plus got this far, TI was well on there way out of the consumer computer business. Rumor has it that an even more power CC-70 was in the works, but it never got past the initial early design and prototyping phase before TI pulled the plug. Later, TI would try again with the TI-74 Basicalc and the TI-95 ProCalc.
It's interesting to note that the case is not the silver plastic/metal bottom like the CC-40, but actually a two tone beige like the later 99/4A and the unreleased 99/8.
Enjoy!
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and it was sold many years ago 
oh:
