Terms
Toss-UP
Toss-UP
This is a way of representing information using only two options (typically 0 and 1)
What is the Binary System?
To change information so that its meaning is hidden from others.
What is Encrypting?
In ASCII, the letter "A" is represented by 01000001. How many bits are in that sequence?
What is 8 bits?
The decimal (standard) number for the binary value 0001.
What is 1?
If a pixel is "on" (white) or "off" (black), this many bits are needed to represent its state.
What is 1 bit?
A single piece of binary information—the smallest unit of data in a computer
What is a Bit?
To change information so that its hidden meaning is shown or revealed.
What is Decrypting?
Before modern screens, computers used these paper cards where a hole represented a "1" and no hole represented a "0."
What are Punch Cards?
The decimal number for the binary value 0011.
What is 3?
High-resolution photos are made of millions of these tiny dots.
What are Pixels?
This is a tiny square or dot which contains a single point of color in a larger image.
What is a Pixel?
If I send you a "scrambled" message that you need a key to read, I have performed this action.
What is Encryption?
To represent the word "CAB" in ASCII binary, you would need this many total bits.
What is 24 bits? ($8 \times 3$)
The binary representation for the decimal number 5.
What is 0101?
In a black and white image, the number "0" usually represents this color.
What is Black?
To change how information is represented so that it can be read by a person
What is Decoding?
True or False: "Decoding" and "Decrypting" are the exact same thing.
What is False? (Decoding is for readability; Decrypting is for security/hiding meaning).
This is the common pronunciation of the acronym ASCII.
What is "Ask-ee"?
This is the decimal value of the binary byte 00001010.
What is 10?
A grouping of 8 bits is commonly referred to by this 4-letter name.
What is a Byte?
To change how information is represented so that it can be read by a computer.
What is Encoding?
This 5-letter "A" acronym is a popular system for representing text in binary.
What is ASCII?
Because ASCII is a "standard" system, it ensures that this happens when you send a file from one computer to a different one.
What is "the text remains the same" or "the computer can read it"? (Compatibility).
If you have 3 bits, this is the highest decimal number you can represent.
What is 7? (111 in binary)
If an image is 10 pixels wide and 10 pixels tall, it contains this many total pixels.
What is 100 pixels?