[in 3,745,533  July 10, 1973
 DIGITAL DATA STORAGE REGISTER MODULES
 Inventors: Floyd Dennis Erwin, Brea; William S. Postma, Anaheim, both of Calif.
 Assignee: Hughes Aircraft Company, Culver City, Calif.
 Filed: May 27, 1970
 Appl. No.: 41,039
 U.S. CI 340/172.5
 IntCl G06I3/00
 Field of Search 340/172.5
 References Cited
UNITED STATES PATENTS
3,349,375 10/1967 Seeber et al 340/172.5
3,364,472 1/1968 Sloper 340/172.5
3,411,139 11/1968 Lynch et al 340/172.5
3,504,353 3/1970 Guzak, Jr 340/172.5 X
3,274,561 9/1966 Hallman et al 340/172.5
3,348,210 10/1967 Ochsner 340/172.5
3,492,654 1/1970 Fresch et al 340/172.5
Primary Examiner—Harvey E. Springborn
Attorney—James K. Haskell and Robert Thompson
Digital data storage register modules for a of the type that can include one or more functional characters of the type that include an input bus, an output bus, control signal input means and which can have inputs and outputs that can be connected to similar or other characters for modular expansion of the operational capabilities. The functional characters including, a modular register character which provides storage for operands of a micro-program; a general logic character that performs basic logic functions for use by the microprogram; an arithmetic logic character that provides major arithmetic functions for use by the microprogram; an input/output character that provides input/output interface to the micro-program machine; a micromemory counter character that provides micromemory address registers and related functions; a micro-instruction register that contains the micromemory word registers; and a micro-array character that contains a micromemory array.
3 Claims, 67 Drawing Figures