×

Electronic cash register with removable memory packs for cashier identification

  • US 4,220,991 A
  • Filed: 09/21/1978
  • Issued: 09/02/1980
  • Est. Priority Date: 10/08/1977
  • Status: Expired due to Term
First Claim
Patent Images

1. An electronic cash register comprising:

  • a keyboard having a plurality of entry keys and at least one function key;

    memory means;

    a cashier memory pack;

    a first interface circuit with which said cashier memory pack is mechanically, electrically and removably coupled; and

    a data processing unit connected to said keyboard, said memory means and said first interface, and which is responsive to the operation of keys on said keyboard to write sales information into said memory means and to accumulatively write at least total sales data for each transaction in the sales information into said cashier memory pack coupled with said first interface circuit.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×