Boots – shoes – and leggings
Patent
1977-06-01
1979-08-07
Malzahn, David H.
Boots, shoes, and leggings
364200, G06F 312, G06F 314, G06K 1502, G06K 1518
Patent
active
041640195
ABSTRACT:
An adaptable programmable calculator is provided by employing a modular read-write and read-only memory unit capable of being expanded to provide the calculator with additional program and data storage functions oriented towards the environment of the user, a central processing unit capable of performing both serial binary and parallel binary-coded-decimal arithmetic, and an input-output control unit capable of bidirectionally transferring information between the memory or central processing units and a number of input and output units. The memory, central processor, and input-output control units are controlled by a microprocessor included in the central processing unit. The input and output units include a solid state output display unit capable of displaying every alphabetic and numeric character and many other symbols individually and in a line of one or more alphameric statements and an output printer unit capable of selectively printing every alphabetic and numeric character and many other symbols individually and in alphameric statements or messages. Questions may be asked of the user and user instructions and other alphameric messages may be given by the output display unit. Answers to those questions and output data may be subsequently printed on the output printer unit without printing the questions, user instructions, and messages displayed by the output display unit.
REFERENCES:
patent: 3747071 (1973-07-01), Haynes
patent: 3760171 (1973-09-01), Wang et al.
patent: 3760375 (1973-09-01), Irwin et al.
patent: 3859635 (1975-01-01), Watson et al.
patent: 3996562 (1976-01-01), Reach et al.
Covington Wayne F.
James Rex L.
Larson Ivar W.
Olander Jr. Emil E.
Russell Homer C.
Hein William E.
Hewlett--Packard Company
Malzahn David H.
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