COMP 200 Exam Prep 2025
Questions and Answers
What is a Binary Number System - ✔✔Base-2 number system. A Binary Number is
made up of only 0s and 1s.
What are Bits? - ✔✔binary digits
Binary to Decimal algorithm - ✔✔- Whenever there is a 1 in a column, add the
positional value of that column to a running sum, and whenever there is a 0 in a
column, add nothing.
- the final sum is the decimal value of this binary number
Decimal to Binary - ✔✔To convert a base ten number to binary just divide by 2(forget
about reminder) until you get to 1. For example: 21 --> 21/2 = 10 --> 10/2 = 5 --> 5/2 = 2
--> 2/2 = 1 (each odd number is a 1 and even number a 0) The answer is 10101
Example: 22-->22/2=11-->11/2=5 -->5/2=2 --> 2/2=1. The answer: 10110
What is signed magnitude? - ✔✔0 means positive 1 means negative
+6 = 0110
The first zero tells us it is positive
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
, How to make a fractional number a binary number - ✔✔First convert the number to
scientific notation
+-M * B^+-E
In the formula +-M * B^+-E what is each value - ✔✔M is the mantissa
B is the exponent base (usually 2)
E is the exponent
What is textual information used for? - ✔✔Used to represent textual material in Binary.
The system assigns a unique number to each printable letter or symbol (this assignment
is called a code mapping) and then it stores that symbol internally using the binary
equivalent of that number
What is American Standard Code (ASCII) for Information Interchange? - ✔✔The
current most used code for representing characters
Why did Unicode gain popularity? - ✔✔Due to the fact it uses a 10-bit system it can
represent 2^16 = 65,536 unique characters as opposed to the 2^8 = 256 unique
characters that ASCII
What is analog representation? - ✔✔Objects can take on any value
What is Amplitude? - ✔✔Height of a wave and is the measure of how loud it is
What is the Period of the wave? - ✔✔The amount of time it takes for a full cycle of the
wave
What is Frequency? - ✔✔number of waves per unit of time
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
Questions and Answers
What is a Binary Number System - ✔✔Base-2 number system. A Binary Number is
made up of only 0s and 1s.
What are Bits? - ✔✔binary digits
Binary to Decimal algorithm - ✔✔- Whenever there is a 1 in a column, add the
positional value of that column to a running sum, and whenever there is a 0 in a
column, add nothing.
- the final sum is the decimal value of this binary number
Decimal to Binary - ✔✔To convert a base ten number to binary just divide by 2(forget
about reminder) until you get to 1. For example: 21 --> 21/2 = 10 --> 10/2 = 5 --> 5/2 = 2
--> 2/2 = 1 (each odd number is a 1 and even number a 0) The answer is 10101
Example: 22-->22/2=11-->11/2=5 -->5/2=2 --> 2/2=1. The answer: 10110
What is signed magnitude? - ✔✔0 means positive 1 means negative
+6 = 0110
The first zero tells us it is positive
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
, How to make a fractional number a binary number - ✔✔First convert the number to
scientific notation
+-M * B^+-E
In the formula +-M * B^+-E what is each value - ✔✔M is the mantissa
B is the exponent base (usually 2)
E is the exponent
What is textual information used for? - ✔✔Used to represent textual material in Binary.
The system assigns a unique number to each printable letter or symbol (this assignment
is called a code mapping) and then it stores that symbol internally using the binary
equivalent of that number
What is American Standard Code (ASCII) for Information Interchange? - ✔✔The
current most used code for representing characters
Why did Unicode gain popularity? - ✔✔Due to the fact it uses a 10-bit system it can
represent 2^16 = 65,536 unique characters as opposed to the 2^8 = 256 unique
characters that ASCII
What is analog representation? - ✔✔Objects can take on any value
What is Amplitude? - ✔✔Height of a wave and is the measure of how loud it is
What is the Period of the wave? - ✔✔The amount of time it takes for a full cycle of the
wave
What is Frequency? - ✔✔number of waves per unit of time
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
