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Electronics Engineering Objective Questions { Digital Circuit and Microprocessor }



372. The number of memory cycles required to execute the following 8085 instructions (I) LDA 3000 H,LXI D, FOF 1 H,would be
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373. In the modulo-6 ripple counter shown in the given figure 7.27, the output of the 2-input gate is used to clear the J-K flip-flops. Oodc inputFig. 7.27 The 2-input gate is
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375. A Boolean function f of two variables x and y id defined as follows :f(0,0) =f(0,1) = j(1,1) = 1;f(1,0) = 0 Assuming complements of x and y are not available, a minimum cost solution for realizing f using only 2-input NOR gates and 2-input OR gates (each having unit cost) would have a total cost of
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376. It is desired to multiply the numbers OAH by OBH and store the result in the accumulator. The numbers are available in registers B and C respectively. A Part of the 8085 program for this purpose is given below :MVIA,00H,Loop;,LILT END,The sequence of instruction to the complete the program would be
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377. Decimal 43 in Hexadecimal and BCD number system is respectively
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378. The Boolean function f implemented in the rgure 7.28 using two input multiplexers is
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