; ▁used ▁on ▁all ▁non - super ▁versions ▁of ▁the ▁Spe ak ▁& ▁Sp ell ▁except ▁for ▁the ▁ 1 9 8 0 ▁UK ▁version , ▁which ▁used ▁the ▁T MC 0 2 8 0 / CD 2 8 0 1 ▁below . ▁Public ly ▁sold ▁as ▁T MS 5 1 0 0 . ▁It ▁was ▁also ▁used ▁on ▁the ▁By ron ▁Pet ite ▁Electron ic ▁T alk ing ▁Type writer ▁to y . ▁Sup ers eded ▁in ▁ 1 9 7 9 ▁by ▁T MS 5 1 0 0 A ▁and ▁T MS 5 1 1 0 . ▁ 1 9 8 0 ▁T MC 0 2 8 0 ▁A K A ▁CD 2 8 0 1 : ▁U sed ▁in ▁the ▁Spe ak ▁& ▁Math , ▁Spe ak ▁& ▁Read , ▁and ▁the ▁T I ▁Language ▁Trans l ator / Language ▁T utor . ▁Pin , ▁but ▁not ▁function ▁compatible ▁with ▁T MS 5 1 0 0 / T MC 0 2 8 0 , ▁has ▁a ▁different ▁L PC ▁and ▁slightly ▁different ▁Ch ir p ▁table . ▁The ▁CD 2 8 0 1 / Die ▁revision ▁F ▁fixes ▁an ▁interpol ator ▁bug . ▁T MS 5 1 0 0 A : ▁Die ▁shr ink ▁of ▁T MS 5 1 0 0 / T MC 0 2 8 1 . ▁Very ▁minor ▁differences ▁in ▁function , ▁uses ▁die ▁rev ▁F , ▁fixing ▁a ▁bug ▁in ▁the ▁interpol ator . ▁U sed ▁on ▁the ▁Century ▁Video ▁System ▁ar cade ▁platform . ▁Us