190417 ⎘
Digital computers in general ; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators; User interface arrangements, e.g. keyboard, display; Interfaces to other computer systems with printing provisions
Calculation data printing apparatus, calculation data printing method and computer-readable storage medium
#2System, method, apparatus and computer readable medium for secure one-time printing of coupons
#3Multiplier operable to perform a variety of operations