BINARY SYSTEMS

Question 1

What are the 2 ways of data representation nd which is used in the modern day world?

Answer 1

Analog signals - continuous and vary in strength and quality
Digital signals are in one of the 2 states ON or OFF. Modern-day computers are digital

Question 2

Decimal, a base 10, is ______ number system

Answer 2

Positional

Question 3

_____ is the magic number in computing

Answer 3

2

Question 4

What are the 2 methods of binary to decimal conversion?

Answer 4

Repeated division by 2 and powers of 2 factorization

Question 5

In binary addition, a carry over is when __+___ occurs

Answer 5

1+1

Question 6

Bit contains ___ piece of info and can hold one of the 2 values that is ___ or ___

Answer 6

One
on or off

Question 7

a byte is made up of ___ bits

Answer 7

8

Question 8

a byte can hold ___ number of values and the range is ____

Answer 8

256 (0-255)

Question 9

ASCII represents each character as a unique ___ bit code

Answer 9

8

Question 10

What is a unicode

Answer 10

16-bit character encoding scheme that allows characters from all major world languages, living and dead, to be encoded in a single character

Question 11

What is bitwise negation in ones complement?

Answer 11

In order to represent a negative binary number we have to flip the 0 to 1 and 1 to 0

Question 12

1s complement of a positive number gives ____

Answer 12

Negative number

Question 13

1s complement of a negative number gives ____

Answer 13

positive number

Question 14

Which number is used a sign in 1s complement method system

Answer 14

The most significant bit which is the extreme left number

Question 15

if we are converting a negative binary number to decimal what is the first step

Answer 15

negate each bit to get a positive binary number then convert to decimal

Question 16

What is the con of 1s complement?

Answer 16

Have to add the carry over to the resulting number (LSB) making it more complex

Question 17

How to get 2s complement of a number?

Answer 17

Negatig each bit and add 1 to the least significant bit

Question 18

What is the range in 2s complement?

Answer 18

The range of 2’s complement form with N bit is:
〖−(2〗^(𝑁−1)) 𝑡𝑜〖 (2〗^(𝑁−1)−1)

Question 19

What are the pros and cons of the Signed Magnitude method?

Answer 19

Pro : easy for humans
Cons: Hard for arithmetic circuits to handle sign, so more complex. Arithmetic circuits must handle both “zero” cases so more complex

Question 20

What is the purpose of the loop structure in Python?

Answer 20

Makes coding easier as u do not have to copy again and again

Question 21

What is an iterable entity?

Answer 21

An iterable is something you can loop through, like a list or a string. When you loop through it, Python goes through the items one by one for you.

Question 22

the _____ function indicates the number of iteration of the floor loop

Answer 22

range()

Question 23

_____ statements inside the for loops are executed once for each value in the range

Answer 23

Indented

Question 24

When is the range function used in the python?

Answer 24

1. When a user wants to perform a specific action for a certain number of times
2. To generate a specific sequence of numbers

Question 25

What are the 3 main arguments of the range function?

Answer 25

Start - the integer indicating the starting point
stop: integer BEFORE which sequence is to be returned and indicates end to the sequence
step: integer indicating increment or decrement between 2 consecutive intgers

Question 26

if only one arguement is passed to the range it is considered a ____ argument

Answer 26

STOP

Question 27

The ___ parameter in print fxn is used to add a string at the end of the print output

Answer 27

end

Question 28

explain the python “for” loop briefly

Answer 28

The Python “for” loop operates on iterable items, which could be strings, lists, etc.
1. When the program is executed and it enters the for loop it checks for an iterable item and if there is one the block of code is executed inside the loop processing the statements inside the block
2. Then it checks for the next iterable item, if true, the loop moves to the next item and repeats the process.
3. If false, the loop ends and the program moves outside the loop to process the next items

Question 29

_____ os the process of repeating steps or instructions multiple times. It is also the repeated execution of a block of code for each item in a collection or until a specific condition is not met

Answer 29

iteration

Question 30

Which function indicates the number of iteration of the for loop ?

Answer 30

Range()

Question 31

What is the purpose of end= fxn in pyhton?

Answer 31

It is to add any string at the end of the output of the print statement in Python

Question 32

____ keyword is used to end the loop or breakout from it

Answer 32

BREAK

Question 33

What helps determine if a number has factors or no?

Answer 33

FLAG