CS 101 Exam 3

What do you call a 0 or 1 ?

A bit.

What did ASCII allow computers to do ?

Allowed computers makers to represent the characters on keyboard as the same zeros and ones.

What is ASCII ?

American Standard Code for Information Interchange

Why can computers only use 0's and 1's ?

B/c there processors are made up of switches ( 0 = off / 1 = on ).

What can bits determine for a computer ?

Bits can determine how many things unique things a computer can remember.

True or False: Computers are base 10 creatures.

False: computers are base 2 system.

True or False: Computer hate to do things in byte size chunks

False: computers love to do things in byte size chunks.

How do you find the next column in a number system ?

Start off with one, then continue to multiply by the base unit (10 or 2).

How many bits is Unicode ?

16 bit or 2 bytes

How many bits are in two bytes ?

16 bits

How many unique binary numbers can three bytes create ?

16,777,216

How many unique binary numbers can one bit create ?

2 unique numbers

How many things can computer remember with one bit ?

2 unique things.

How many bits are in three bytes ?

24 bits

How many unique binary numbers can one byte create ?

256

How many bits are in four bytes ?

32 bits

How many unique binary numbers can two bits create ?

4 unique binary numbers

How many things can a computer remember with two bits ?

4 unique things

How many unique binary numbers can four bytes create ?

4,294,967,296

How many bits are in 01101

5 bits

How many unique binary numbers can two bytes create ?

65,536

How many bits are in one byte ?

8 bits

How many unique binary numbers can three bits create ?

8 unique numbers.

How many things can a computer remember with three bits ?

8 unique things

True or False: Computers can only use numbers 0 and 1 in a base two number system ?

True

True or False: You can determine the number of unique binary numbers by raising two to the power of the column number ?

True

What does binary mean?

Two

What do modern computers use for text ?

Unicode

What is Unicode short for ?

Universal Code

Do computers remember sounds and colors as 1's and 0's ?

Yes, they can only remember things as ones and zeros.