A classifying system for determining with which group of a plurality of groups of reference file words a data word most closely compares and comprising a plurality of groups of comparison means each constructed to simultaneously and individually compare a different group of file words with said data word to produce a comparison pulse for each comparison of said data word with a file word. Means are provided for identifying each group of file words in which the comparison of not more than one fil...

A data mover for moving blocks of data stored in a first location of the working store of a data processing system to a second location in the working store. The data mover is provided with the necessary registers, switches, counters and control circuits to issue read and write commands to the working store, to receive and store in registers data read out of the working store as the result of its having issued a read command, and to write data read out of working store and stored in its register...

The invention relates to a data register with a register card selection mechanism, whose selector keys connected with the swivel levers are arranged one behind the other and alongside one another in an opening of the housing in such a way that the width of each selector key corresponds to the width of the swivel levers, while the card restraining pins on each swivel lever are formed from U-shaped portions shaped onto the swivel lever end with a rod which engages from below in the register card o...

A data processor used with a host computer is constructed by a plurality of memory units, at least one arithmetic and logic unit, a register file and a microprogram memory for storing microprograms to control these circuit components. The first field of each microinstruction of the microprogram is supplied to a first logic converting circuit of which the output signal drives each memory unit. The third field of the microinstruction is supplied to the second logic converting circuit of which the ...

Binary digital data signal patterns containing either no transitions, periodically recurring transitions or both are randomized by constructing a key signal from a summation of selected stored digits of the data pattern and combining such key signal with the data signal to form a scrambled line signal for transmission. The line signal so constructed is free of signal energy concentrated at particular frequencies and provides signal transitions adequate in number to assure reliable recovery of sy...

Variable delay circuits generate output signals representing test signals having controlled timing widths. The output signals are generated by the variable delay circuits in accordance with data received from a memory under the control of a program of instructions stored in the memory. A fixed cycle clock initiates accessing of instructions one at a time. Each instruction in turn identifies control data which is supplied at times specified by a variable cycle clock. The delay circuits are assign...

A data converting apparatus cooperating with a function pattern containing information of a given function; the scanner is to be actuated a distance corresponding to the axis of the independent variable and the corresponding value on the function pattern is detected for conversion to provide a numerical readout.

A computer system includes a high-capacity storage for storing a set of information, additional information-handling means for handling a subset of information selected from the set of information, and a truncated relay tree. In reading stored information, the large end of the truncated relay tree is normally the input end and is connected to the high-capacity storage; the small, truncated end is normally the output end and is connected to the additional information-handling means. The number of...

A data terminal for a digital signalling system is arranged to receive incoming data transmitted in serial form and to divide the data into multi-digit signal units for supplying to a processor. Receipt of the data is controlled by a timing generator having a cycle of time slots equal to the number of digits in a signal unit. The validity of each signal unit is checked, using check bits forming part of each unit, and a check fail indication is passed to the processor if an invalid unit is detect...

A simple, effective and economic arrangement of detecting a predetermined position on a recording medium of a data recorder. A data recorder disclosed comprises a movable magnetic recording medium in the form of a base material with a coating of magnetic material thereon, the magnetic material being removed from the base material at a plurality of areas spaced in the direction of movement of the recording medium, and sensing means operable to sense the presence of said areas and produce a signal...