Keyboard of electronic desk calculator close-up in selective focus
Palabras clave
calculating machine,
desk calculator,
key,
keyboard,
buttons,
rubber,
device,
contraption,
equipment,
display,
digit,
memory,
electronic,
modern,
cheap,
simple,
ordinary,
accurateness,
standard,
portable,
convenient,
calculation,
arithmetic,
mathematic,
worked,
formula,
business,
education,
design,
technology,
isolation
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