Computer Fundamental Miscellaneous - Study Mode
[#941] An output device that converts data from a binary format in main storage to coded hole patterns punched into a paper tape is
Correct Answer
(A) Paper tape punch
Explanation
Solution: An output device that converts data from a binary format in main storage to coded whole patterns punched into a paper tape is Paper tape punch. Similar to a punch card, punch tape is used with some early computers as a means to store and input data into the computer.
[#942] A computer performs operations by comparing data items and then, depending on the results, follows predetermined course of action. What are such operations called?
Correct Answer
(B) Logical
Explanation
Solution: A computer performs operations by comparing data items and then, depending on the results, follows predetermined course of action. The operations called in Logical of or according to the rules of logic or formal argument.
[#943] A file that includes an index directory to facilitate random access is
Correct Answer
(B) Indexed file
Explanation
Solution: An indexed file is a computer file with an index that allows easy random access to any record given its file key. The key must be such that it uniquely identifies a record. The indexes are created with the file and maintained by the system.
[#944] The data bus in 8080A/8085 microprocessor is a group of
Correct Answer
(A) eight bidirectional lines that are used to transfer 8 bits between the microprocessor and its I/O and memory
Explanation
Solution: In 8085 microprocessor, Address bus is of 16 bits (A0-A15) and can transfer maximum 16 bit address and hence can address 65,536 different memory locations. This bus is multiplexed with 8 bit data bus. So, the most significant bits (MSB) of address goes through Address bus and LSB goes through multiplexed data bus.
[#945] Control of computer system or subsystem operation by an operator who may intervene at arbitrary times is
Correct Answer
(A) Manual control
Explanation
Solution: 1) Control of computer system or subsystem operation bayan operator who may intervene at arbitrary times is Manual control. 2) The key characteristic of control is to interfere, to influence or to modify the process. 3) Manual Controls are controls that are manually performed by individuals.