Because of this quirk, and a convenient empty space on the top of the computer above the processor, 99's are often affectionately referred to as coffee warmers. A floppy drive, Speech Synthesizer, Peripheral Expansion Box, modem, and many other add-ons can be attached through the expansion port.ĭue to oversights in design, '99's generally become very warm after a few hours of usage, although not to the point of overheating. Data input (and output) can come from any standard cassette player with stereo outputs. Visual output for the '99 is generally through a normal television to which the TI has been plugged, or to a monitor specially made for the system. As far as software, the '99 comes equipped with a BASIC interpreter (NOT TI's TI BASIC for calculators!) and not much else. The computer itself has a standard QWERTY keyboard, cartridge port, joystick plug, expansion port, and various other I/O stuff, all housed within a single black and metallic gray (or beige) console. The TI-99/4A was a home computer introduced by Texas Instruments in 1979.
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