Combined counting board and abacus
Combined desk top electronic calculator and clock
Combined digital clock and calculator
Combined electronic calculating machine and timepiece
Combined electronic calculating machine, radio and clock
Combined electronic calculator and checkbook
Combined electronic calculator and clock
Combined electronic calculator and clock
Combined money tray and calculator
Computer
Computer for blackjack decisions
Computer keyboard mounted calculator with attachment for spiral
Conversion apparatus
Conversion calculator
Conversion calculator or similar article
Conversion device
Currency converter