by BlastRoom
Practice counting pixels, calculating bitmap sizes, and comparing color depth.
#computer_science

25 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.

Pick a tile, answer, hit bonuses and steals.

Battleship. Sink every enemy ship to win.
Pass the potato before the fuse runs out.
Buy low, sell high, before the news breaks.
Take the wages, or take the whole vault.
Answer, then shoot for the top corner
How many pixels does the bitmap shown hold altogether?

Count every cell in the bitmap shown. What is its total number of pixels?

What resolution, in total pixels, is represented by this small bitmap?

A bitmap is made of the cells shown. How many pixels are stored in it?

In this black-and-white bitmap, black is stored as 1 and white as 0. What bit pattern is stored for the third row from the top?

Black pixels are 1 and white pixels are 0. Which sequence is stored for the top row of this bitmap?

For the displayed black-and-white bitmap, what bits are stored for the fourth row from the top?

A black pixel is represented by 1 and a white pixel by 0. Read the second row of the bitmap shown.

An image is 320 pixels wide and 200 pixels tall. How many pixels does it contain?
A display image has a resolution of 1,280 pixels by 720 pixels. What is the total pixel count?
A small icon is 75 pixels wide and 48 pixels tall. What is its resolution in total pixels?
How many pixels are in a 1,920-pixel-wide by 1,080-pixel-tall image?
An uncompressed bitmap is 100 pixels wide and 50 pixels tall, with 8 bits per pixel. Ignoring any header, what is its file size?
A 64 by 64 pixel image is stored uncompressed at 24 bits per pixel. Ignoring any header, what is its size in bytes?
An uncompressed 300 by 200 pixel image uses 4 bits for each pixel. Ignoring any header, what is its file size?
A bitmap is 125 pixels wide and 80 pixels tall with a color depth of 16 bits per pixel. Stored uncompressed and ignoring any header, how large is it?
A 1,920 by 1,080 pixel black-and-white bitmap uses 1 bit per pixel. It is uncompressed and has no header. What is its file size?
An image stores each pixel using 1 bit. How many different colors can one pixel represent?
A graphics program uses 2 bits for each pixel's color. How many colors are available for a pixel?
How many colors can a pixel represent when its color depth is 5 bits?
A bitmap uses an 8-bit color depth. What is the largest number of different colors one pixel can represent?
Image A and Image B are both 200 by 200 pixels and uncompressed. Image A uses 8 bits per pixel; Image B uses 24 bits per pixel. Which statement is correct?
Two uncompressed images both use 8 bits per pixel. Image A is 640 by 480 pixels, while Image B is 1,280 by 480 pixels. How do their file sizes compare?
Image A and Image B are both 100 by 100 pixels and stored uncompressed. Image A uses 4 bits per pixel, and Image B uses 8 bits per pixel. What explains the size difference?
Two uncompressed images use 24 bits per pixel. Image P is 400 by 200 pixels, and Image Q is 200 by 200 pixels. Why is Image P larger?
Binary to Decimal and Back
60 questions
Binary Addition
30 questions
Hexadecimal and RGB Color Codes
40 questions
ASCII and Representing Text
25 questions
Sound, Sampling and Compression
25 questions
How the Internet Works: Packets, Routers and Nodes
40 questions
IP Addresses, DNS and URLs
40 questions
Protocols: HTTP, HTTPS, TCP/IP and FTP
30 questions
Keep the tile or give it to a rival team.
Answer correctly to move your piece.
Texas Hold'em. Answer to draw better cards.
Pick a chest. Big bonus, or lose it all.
Catapult a rival castle or repair your own.
Climb the mountain, or push a rival off it.