Abstract: There is provided a digitized motor control apparatus which is capable of digitally effecting all the functions of the motor control apparatus except those involved in energy conversion.

Abstract: With a microprogrammable computer of a numerically controlled machine, macroinstructions are executed in response to a first microprogram. The computer makes the machine carry out its inherent functions, such as interpolation, in response to a second microprogram. Flags may be used to switch sequential execution of the macroinstructions to repeated execution of a portion of the macroinstructions and sequential execution of microinstructions of the second microprogram.

Abstract: A synchronous digital data processing system employing single-phase clock pulses comprises arithmetic and control units which are capable of completing an operation during one clock pulse period. The data processing system includes closed data paths wherein only one stage of a memory circuit capable of the same operation as a master/slave flip-flop is used as a data register in the arithmetic unit and as an address register in the control unit. In either case, during one cycle of a single-phase clock pulse, an input data is set in the memory circuit, and the output of the memory circuit is renewed in response to the input data. The output of the memory circuit is held until it is renewed in the following cycle.