Data input/output machine for a cash register
Design for a handheld calculator
Desk calculator
Desk top calculator
Desk top calculator
Desk top electronic calculator
Desk top electronic calculator
Desk top electronic calculator
Desk top electronic calculator
Desk top electronic calculator
Desk top electronic calculator
Desk top electronic calculator
Desk top electronic calculator
Desk top electronic calculator
Desk top electronic calculator
Desk top electronic calculator
Desk top electronic calculator
Desk-top calculator
Desk-top electronic calculator
Desk-top electronic calculator