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Q. Explain working of Counters?
A counter is a register that goes through a predetermined sequence of states when clock pulse is applied. In principle value of counters is increased by 1 module the capacity of register it implies that when value stored in a counter reaches its maximum value next incremented value becomes zero. Counters are mostly used in circuits of digital systems where control and sequence operations are performed for illustration in CPU we have program counter (PC).
Counters can be categorized in two categories based on the manner they operate: Asynchronous and synchronous counters. In Asynchronous counters change in state of one flip-flop triggers other flip-flops. Synchronous counters are relatively faster since state of all flip-flops can be changed at the same time.
Q. Displaying the List of Files with DIR? You can display the list of files kept in a diskette or hard disk with the DIR commend. This Commends list files and sub directories i
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What is Matrix Addressing Mode. Ans. Matrix Addressing Mode: The arrangement which needs the fewest address lines is a square array of n rows and n columns for a whole memory
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A script kept information on potential subjects for an experiment in a vector of structures known as "subjects". The following show an example of what the contents may be: >> subj
Q. How can this arithmetic processor be associated to the CPU? Two mechanisms are used for connecting arithmetic processor to CPU. If an arithmetic processor is treated a
The logic circuit shown in the given figure can be minimised to Ans. The minimised figure of logic diagram is D, the output of the logic circuit is as Y=(X+Y')'+(X'+(X+
Q. What is File allocation table? FAT maps the usage of data space of disk. It comprises information about space used by every individual file and unused disk space as well as
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