Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1980-02-04
1982-06-08
Miller, Charles D.
Communications: electrical
Audible indication
Percussion-type sound producer
235311, H03K 1324, G06F 502
Patent
active
043342132
ABSTRACT:
Disclosed is a circuit for transforming digital input signals representing several digits within a binary coded decimal (BCD) address into digital output signals for addressing a binarily addressable memory. One portion of the circuit concatenates the three least significant bits of each digit of those input signals whose most significant bit is a logical "0", and concatenates only the least significant bit of each digit of those input signals whose most significant bit is a logical "1". Another portion of the circuit simultaneously generates a predetermined code that is representative of the most significant bits of all of the digits of the input signals.
REFERENCES:
patent: 3160872 (1964-12-01), Anderson
patent: 3170062 (1965-02-01), Boese
patent: 3449555 (1969-06-01), Wang
patent: 3618047 (1971-11-01), Hertz
patent: 3705299 (1972-12-01), Bastian
Paadnis, "Computer Design", Dec. 1978, pp. 94,96,98,103.
Bredson, "Computer Design", May 1974, pp. 104,106,107,108.
Chen, "Communication of the ACM", vol. 18, No. 1, Jan. 1975, pp. 49-52.
Lengyel, "IBM Technical Disclosure Bulletin", vol. 9, No. 10, Mar. 1967, p. 1347.
Burroughs Corporation
Fassbender Charles J.
Miller Charles D.
Peterson Kevin R.
Richbourg J. Ronald
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