04553252 is referenced by 150 patents and cites 8 patents.

A cartridge housing contains a semi-conductor or memory for storing digital information which may be accessed by an external device for display on a screen. The cartridge includes a counting circuit for counting the number of times the cartridge is used and a display for exhibiting the count.

Title
Counting computer software cartridge
Application Number
332783
Publication Number
4553252
Application Date
December 6, 1982
Publication Date
November 12, 1985
Inventor
Harris H Egendorf
8016 Bustleton Ave., Philadelphia, 19152
PA, US
Agent
Seidel Gonda Goldhammer & Abbott
IPC
G06M 1/08
G11B 23/04
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