Decimal Day use pennies or threepenny pieces, to pay them in multiples of 6d (p, the lowest common multiple of the two systems). Bus companies (at that time many state-owned by the National Bus Company) were another exception, going decimal on Sunday 21 February. Decimal Day itself went smoothly. Criticisms included the small size of the new halfpenny coin and the fact that some traders had taken advantage of the transition to raise prices. Some used new pennies as sixpences in vending machines. After 15 February, shops continued to accept payment in old coins, but always issued change in new coins. The
Decimal computer the 1620, these machines used word addressing. When non-numeric characters were used in these machines, they were encoded as two decimal digits. Other early computers were character oriented, providing instructions for performing arithmetic on character strings of decimal numerals. On these machines, the basic data element was an alphanumeric character, typically encoded in six bits. UNIVAC I and UNIVAC II used word addressing, with 12-character words. IBM examples include IBM 702, IBM 705, the IBM 1400 series, IBM 7010, and the IBM 7080. The IBM System/360, introduced in 1964 to unify IBM's product lines, used per character binary addressing, and