Digital Electronics Objectives Part 19
361 . 6.5 interrupt are masked
362 . Here are some initializing instructions
MVI A, IDH
SIM
After the sim is executed, 7.5 and 5.5 are the interrupts that are masked.
Questions 363 to 367 refer to data given below:
This program loops 8 times. The successive SID bits after each RIM is executed are 1,1,0,0,0,0,1 and 0.
363 . B register contain 40 H after the first MOV B, A has been executed.
364 . B register contain 60 H after the second MOV B, A has been executed.
365 . 43 H are the contents of the accumulator after the RLC has been executed.
366 . the above letter in ASC II code is Cd.
367 . The SID data received LSB first.
368 . For a microprocessor system using IO-mapped IO the following statement is NOT true IO address space is greater.
369 . A microprocessor with a 16-bit address but is used in a linear memory selection configuration (i.e. address but lines are directly used as chip selects of memory) with 4 memory chips. The maximum addressable memory space is 64 K.
370 . An 8-bit micro-processor has 16-bit address but Ao – A15. The processor addresses a 1-k byte memory chip as shown. The address range for the chip is FOOOH TO F3FFH.
371 . A micro-processor with a 16-bit address but is used in a linear memory selection configuration i.e., address bus lines are directly used as chip selects of memory chip with 4 memory chips. The maximum addressable memory space is 64 K.
372 . A microprocessor system using IO mapped IO the following statement is NOT true that IO address space is greater.
373 . 1023 outputs are there in the output of a 10-bit D/A converter.
374 . In the above case, the percentage resolution is 0.097.
375 . In Fig.58 R=20 k ohm and C = 73pF. The converter clock frequency will be 606 Hz.
Question 376 to 378 refer to Fig. 59
376 . Normal range of analog input voltage is 0 to 5 V.
377 . If Vin is 0.99 V, the digital output 0011 0011 of the ADC 0801 after INTR goes low.
783 . Maximum output voltage from the 741 op-amp is approx 5 V.
379 . In 8156, the lowest timer byte is addressed with 24 H, and the upper times byte with 25 H.
380 . The timer is a preseutable 24-bit counter that count TIMER IN pulses. The number that is preset in the timer is called the terminal count.
