Cash register

device · 1879 · Electric age

A machine for recording sales (Ritty).

Inventor: James Ritty.

What it is made of

• Keyboard — has part. Sums were entered with keys.
• Gear — has part. A counting mechanism of gears.

Principles and materials it uses

• Barcode — uses. Tills read barcodes.
• Cast iron — is made of. Ritty’s registers had a cast-iron body.
• Brass — is made of. The trim and mechanism are brass.

Where it is used

• Supermarket — is used in. Tills.

History: what it evolved from and what it influenced

• Self-checkout — evolved into. A till.

Take Cash register apart

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