862. When an input electrical signal A=10100 is applied to a NOT gate, its output signal is
A. 1011
B. 10001
C. 10101
D. 101
✅ The correct answer is option A.
864. What technology of memory is Cache RAM usually?
A. DRAM
B. Flash
C. SRAM
D. EEPROM
✅ The correct answer is option C.
867. Which of the following processor is software that accepts user ideas, manipulates and reorganises them in user-specified ways and then produces a refined model of those thoughts.
A. Distribute
B. Out-line
C. Multi
D. On-line
✅ The correct answer is option B.
871. Which of the following operating systems is produced by IBM?
A. OS-2
B. Windows
C. DOS
D. UNIX
✅ The correct answer is option A.
874. Factory production lines can be automated using?
A. Machine tools
B. VDUs
C. Plotters
D. None of these
✅ The correct answer is option B.
877. The decimal equivalent of the binary number 11100001111 is
A. 1806
B. 1807
C. 2806
D. All of the above
✅ The correct answer is option B.
880. Binary numbers need more places for counting because:
A. 0’s and 1’s can be added in front of them
B. 0’s and 1’s have to be properly placed
C. They are always big numbers
D. Binary base is small
✅ The correct answer is option D.
883. Which of the following is the 1’s complement of 10?
A. 1
B. 110
C. 11
D. 10
✅ The correct answer is option A.
886. The 7-bit ASCII code widely used
A. For data communication work
B. In IBM mainframe models
C. For coding external memory
D. In large machines produced by non-IBM vendors
✅ The correct answer is option A.
855. Which of the following will happen when data is entered into a memory location?
A. It will add to the content of the location
B. It will change the address of the memory location
C. It will erase the previous content
D. It will not be fruitful if thjere is already some data at that location
✅ The correct answer is option C.