SCUEC 2016 -2017 Academic Final Examination Semester II J Course Name Foundation

Question

SCUEC 2016 -2017 Academic Final Examination Semester II J Course Name Foundations of Computer Paper A (6 ages Total Style: Open Book Examination For: BBA 2016 Marker Score I .True of False. (2% 5-10%) can 1. Binary numbers are important in computing because a binary number be converted into every other base. 2.Binary numbers can be read offin hexadecimal but not in decimal. 3. A byte is made up of eight binary digits. 4. Reading octal its off as binary produces the same result whether read from right to left or from left to right A-1 6

Explanation / Answer

1. False

Binary digits are importent in computing because binary numbers contains only two bits 0 or 1. It is easy for the computers to understand this because every thing in computer based on transistors with high(1) and low(0) signals only.

2. False

Because we can read binary numbers in decimal also. But in hexadecimal the number can be represented just with 4 numbers while in other the number can be shown in larger strings upto 0 to 9 only using 0 and 1. In hexadecima we can show upto 15. Thats why hexadecimal is the most recommended one to represent binary string.

3. True

Each byte is made up from 8 bits.

4. True

Because in octal to binary conversion we will treat each bit of octal to convert to decimal. So that either from left to right or from right to left the result will be same.

5. False.

Digital signals will be shown like stepping with square wave form.

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