The Texas Instruments Compact Computer 40 or CC-40 is a battery-powered laptop that was developed by Texas Instruments and released in March 1983. Priced at $ 249, it weighs 600 grams and can be powered by four AA batteries or an adapter CA. It was designed as a portable business computer and uses TI's TMS70C20 CPU, an 8-bit microprocessor running at 2.5 MHz.
The CC-40 has 6 kilobytes of random access memory (expandable to 18 KB), 34 KB of read-only memory, and a 31-character LCD display. It is capable of running for 200 hours on one set of batteries and the memory is not cleared by turning off the unit, so a non-powered unit can retain data for several months.
The CC-40 has a single Hexbus port for connecting peripherals. The following Hexbus peripherals have been released: 80 column printer, printer / plotter, RS232 and modem. A "wafertape" digital drive (a licensed version of the Exatron Stringy Floppy)  pictured on the computer box was released as a prototype only, reportedly because it proved too unreliable. The inability to store the data has permanently damaged the sales of the CC-40.
The software was only available on cartridge or by typing programs into its built-in BASIC interpreter. The BASIC interpreter is similar but not identical to the TI-99 / 4A.
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