Computer Questions Short Answers Assignment Example | Topics and Well Written Essays - 750 words

Computer Questions Short Answers - Assignment Example 09- How/why is a branch instruction really a data movement instruction ANS: A branch instruction is not a data movement instruction because branch instruction jump from one instruction to another but don't move data from one instruction to another. 10- How can the speed at which an electrical circuit performs its function be increased ANS: Acircuitis an unbroken loop of conductive material that allows electrons to flow through continuously without beginning or end.Generally as the feature size shrinks, almost everything improves-the cost per unit and the switching power consumption go down, and the speed goes up. 11- What are the advantages of gallium arsenide (as compared to silicon) for the implementation of microprocessors ANS: It has smaller molecular size and thus (in theory) smaller circuits can be fabricated from it. It has both electrical and optical properties. 12- Why does the reliability of magnetic storage media generally decrease as recording density increases ANS: Higher density means less surface area per bit. Less surface area per bit means less mass of coercible material. Less coercible mass means reduced ability to hold a charge high enough to be reliably read and to allow for magnetic leakage, decay, and other destructive factors. 13- What factors contribute to the loss of data stored on tapes ANS: If system crashes leading to incomplete sessions. Hardware problems causing incorrect or incomplete write operations Corrupted media or databases. Due to malicious external agents like viruses and hackers 14- What are the advantages of optical data storage devices as compared to magnetic data storage devices ANS: Optical storage devices are read by... ANS: Optical storage devices are read by a laser beam. Generally they have a more limited storage capacity when compared to magnetic devices. However, one advantage is that they are more hard wearing than magnetic devices. ANS: When you decrease the buffer size you increase the number of "outside loop" operations, and thus you increase the load on the CPU. When you computer gets too busy it may not complete the buffer loop in time to deliver its samples to the mixing bus, which, in turn, has to deliver to the driver/soundcard. The result will be unpleasant cackling noise. ANS: Code 39 (also called Code 3 of 9) is an easy-to-print barcode commonly used for various bar-coding labels such as name badges, inventory and industrial applications. The Universal Product Code was the first bar code to be widely adopted from as early as April 1973 by the US grocery industry for product marking. Code 2 of 5, sometimes called Code 2 from 5 and the interleaved 2 of 5 barcodes can represent the digits 0-9. In use since the late 1960's, it is a popular choice for airline tickets, photo developing envelopes and internal warehouse systems. ANS: Bar code scanners are manufactured to read the