1973-08-16
1977-01-11
Grieb, William H.
35 35C, G09B 702
Patent
active
040019470
ABSTRACT:
A system for teaching spelling, arithmetic or other drill subject is disclosed which utilizes a magnetic tape to store signals containing both oral questions and digital data representative of the correct answer to the question. A teacher's encoding unit provides means for recording the question on the magnetic tape, and means for encoding and recording on the tape the correct alphabetical or numerical answer to the question. A student's unit includes a playback system for reproducing the signals from the tape and presenting the question to the student. The student then sets the alphabetical or numerical answer into an encoder and a comparator compares the answer encoded by the student with the coded answer stored on the tape.
Each of the units features an encoder having twelve character select switches each having 27 positions. A dual indicator system permits the entire alphabet plus the entire numerical system, or a total of 52 characters to be included in the answers.
REFERENCES:
patent: 3146320 (1964-08-01), Wang et al.
patent: 3360873 (1968-01-01), Tillotson et al.
patent: 3660912 (1972-05-01), Laplume
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