Digital grade averager

Details Digital grade averager Digital grade averager

1976-04-26

1977-09-13

Smith, Jerry

Registers

Transfer mechanism

Traveling pawl

G06F 1502, G06F 1520

Patent

active

040484840

ABSTRACT:
A digital calculator particularly adapted for utilization by teachers in averaging a plurality of grades. The device employs a key board with letters, indicative of letter grades as used in the teaching profession, A+, A, A-, B+, etc. to E, and numbers 0 to 13, a regular calculator chip, circuitry for generating the numbers 10, 11, 12, and 13 and circuitry for decoding the letter grade from the digital output when letter grades are entered and after the grades are averaged. A counter is provided to keep track of the grades entered. All of the calculator chip features are retained at the key board so that the device can be operated as a regular calculator for arithmetic computations as well as averaging grades.

REFERENCES:
patent: 3470368 (1969-09-01), Brittan
patent: 3924111 (1975-12-01), Farris
patent: 3947669 (1976-03-01), Simmons et al.
patent: 3955074 (1976-05-01), Rode et al.
patent: 3973113 (1976-08-01), Goldsamt
patent: 3979058 (1976-09-01), Katz et al.

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