. Why ABC is considered electro-mechanical computer?
Options: A) Because it was invented before electronic computers were developed
B) Because there are wheels, drums, bars to rotate and move to produce result
C) Because they use the flow of electrons in different component
D) None of above
Options: (A)The low-level components of a system are integrated and tested before the higher-level components have been developed. (B) The testing process starts with modules at lower levels in the hierarchy and works up the hierarchy of modules until the final module is tested (C) An event driven control system, where an event is broadcasted to each subsystem and any sub-system that can handle that event responds to it. (D) Control starts of the top of a sub routine hierarchy and through sub routine calls passes to lower levels. 13
Options: (A)ignores the interrupt (B) always changes state of interrupted process after processing the interrupt (C) always resumes execution of interrupted process after processing the interrupt (D) may change state of interrupted process to blocked and schedule another process 21
Options: An electron that has been freed from its parent atom, An electron that costs nothing, An electron that has no electrical charge, An electron that has twice the amount of charge of a normal electron
Options: a. It is a printed page where users will write their data to fill it up
b. It is an input screen designed to make the viewing and entering data easier
c. This is an important part of database used by analysts to draw conclusions
d. All of above
Before any changes to database structure are attempted one should first:
Options: clearly understand the current structure and contents of the database only., test any changes on a test database only., create a complete backup of the operational database only., All of the above should be done.
When applying a square waveform to a capacitor, the circuit tends to:
Options: peak the voltage and round off the current waveforms, peak the current and round off the voltage waveforms, round off both the voltage and current waveforms, peak both the voltage and current waveforms