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Q. What is Read-only-Memory?
Read only memory is an illustration of a Programmable Logic Device (PLD) it implies that binary information which is stored within a PLD is specified in some fashion and embedded within hardware. So information retains even when power goes.
Figure: ROM Design
Above figure (a) presents block diagram of ROM. It comprises 'k' input address lines and 'n' output data lines. An m ×n ROM is an array of binary cell arranged in m (2k = m) words of 'n' bits each. ROM doesn't have any data input since write operation is not defined for ROM. ROM is categorized as a combinational circuit and constructed internally with decoder and a group of OR gates. In general a m × n ROM (where m= 2k, k = no. of address lines) will have an internal k ×2k decoder and 'n' OR gate. Every OR gates has 2k inputs that are connected to each of the outputs of decoder.
Q. Illustrate Characteristic tables of flip-flops? Excitation Tables Characteristic tables of flip-flops present the subsequent state when inputs and present state are kno
Differentiate between Prepurchase and Purchase Consummation of consumer mercantile model. The prepurchase interaction for consumers comprises three activities: Product/ser
What is Linear Addressing Mode. Ans. Linear Addressing: Addressing is the procedure of selecting one of the cells in a memory to be written in or to be read from. So as to fa
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A critical section is a program segment? Ans. A critical section is a program segment where shared resources are accessed.
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Illustrate about 8259 8259A adds 8 vectored priority encoded interrupts to the microprocessor. We can expand it to 64 interrupt requests by using one master 8259A and 8 slave
Q. What is Single Program Multiple Data? A general style of writing data parallel programs for MIMD computers is SPMD (single program, multiple data) means all processors execu
To avoid race condition, the maximum number of processes that may be simultaneously inside the critical section is The maximum number of processes is one to ignore race conditi
How numbering plan is achieved in modern telephony? Give the structure with example. The objective of numbering plan is to uniquely identify every subscriber connected to a tel
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