6. Tandy TRS-80 Micro Color Computer MC-10 (1983)
Tandy must have been jealous of the Spartan Timex Sinclair 1000's success when it released the MC-10 in 1983, whose design smacked of needless minimalism. For almost every task, a bigger computer (such as the TRS-80 Color Computer) would have done the job much better, for a marginally higher cost. As with the Color Computer, the MC-10's keys felt surprisingly responsive for a Chiclet keyboard (albeit a half-size one). Unfortunately, many keys controlled four different functions, including BASIC shortcuts (a la Sinclair computers). As far as layout went, the MC-10 suffered badly from three major design mistakes: The Break key was where the Backspace key should have been, there was no Backspace key, and no Left Shift key existed--instead, a Control key sat in its place, and a single Shift key mirrored that position on the opposite side of the keyboard. But hey, at least users got a spacebar this time.