In editing a program, when a reference variable name of a predetermined program line is designated, a line variable i (its initial value is 1) and line information n are compared. If i.gtoreq.n, the processing is ended. If i<n, a check is made as to whether the line i is a variable definition area. If the line i is not the variable definition area, the line variable i is incremented and the process is repeated. If the line i is the variable definition area, the line i is searched for the refe...

A diagrammatic method is disclosed of testing a program in a data processing system equipped with a display terminal for interactive operations. Program specification inputs are given in a diagrammatic form through interactive operations and are edited into diagrammatic specifications. Those diagrammatic specifications are then translated into a source program described in, for example, FORTRAN, in which are interspersed comment statements each of which indicates a diagrammatic specification cor...

In a program shutter including a forwardly/reversely rotatable step motor for opening and closing a shutter blade to effect automatic exposure, a drive pulse number and an interpolation quantity are set in first and second counters. A step drive pulse is generated by the first counter to start opening the sectors. After a final pulse is generated, the second counter is started, and at the timing when the time corresponding to the interpolation quantity is elapsed, the step motor is reversely rot...

A part program creation method for creating an NC part program comprising a graphic definition statement defining a graphic (MFIG), a motion definition statement defining motion of a tool (TL), and auxiliary machining information such as feed velocity and spindle rotational velocity, the method having steps of storing in a memory along with respective graphic identifiers, motion definition statements conforming to respective ones of the graphics, entering a graphic identifier and defining the gr...

A distributed control system controlling a plurality of subprocesses wherein each of the process control computers (44, 46, 48) executes a preprogrammed set of instructions (50-62) identical to the preprogrammed set of instructions (50-62) in the other process control computers (44, 46, 48) in the distributed control system. Inputs from field devices (76, 78, 80) are connected between each subprocess and the process control computer (44, 46, 48) providing control therefor as well as between each...

A multi-bit program identification signal is transmitted in the audible band with a program signal, and a receiver detecting the program identification signal automatically sets a predetermined minimum volume for reproduction of the program information. The volume control circuitry at the receiver can be made responsive to any one of a plurality of different program identification signals.

An audio program is encoded with a subaudible binary code. A first value bit (mark) is a first frequency signal and a second value bit (space) is a second frequency signal. The coded message includes an initialization period constituted by a signal having the mark frequency. In decoding, the mark and space signals are detected through first and second band pass filters specific to the mark and space signal frequencies. The mark and space frequencies are sufficiently different to permit separate ...

A micro controller which has a first memory in which invertedly enciphered program data is stored, a second memory which stores cipher key data necessary for decoding the password stored in the first memory, a CPU which controls writing data to or reading data from the first and second memories and a unit which descrambles the cipher in the program data stored in the first memory based on the key data stored in the second memory, when the CPU accesses the first memory. The operation of this CPU ...

A measuring apparatus for measuring the time of execution of instructions or the number of cycles that addresses are within a selected address range of a memory. The measurement includes a measurement of any common subroutines that have been called by the instructions within the selected range. The measuring apparatus includes range circuitry connected to the address bus of the memory that detects instruction addresses within the selected range and instruction addresses within a common range hav...

A plurality of recorded audio/video signal sources of a program library sequentially transmit segments of a broadcast signal within a time compressed transmission period through a common signal carrier path to a plurality of subscriber stations at which selected segments are detected and expanded for real time reproduction through standard television receivers. Program selection is effected at the subscriber stations through telephone dialing codes also transmitted to the service station by stan...