Tandy Corp unashamedly believes in built-in obsolescence and as the clock chimed midnight on December 31, time ran out for all the TRS-80 Model 4 personal computers made before August last year: Release 6 of TRS-DOS (Trisdos to Tandy, Trashdos to detractors according to the Wall Street Journal) won’t run until you key in the date – and it won’t accept dates later than 12.31.87 as our transatlantic cousins so quaintly put it; users can either regress towards their youth and key in an earlier year or lash out $39 on an upgrade of the operating system – but beware, after 12.31.99, they’ll have to go through the whole procedure all over again.
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