ENGR 325 HOMEWORK #1 ANSWER KEY

(5) Aside from the smart cell phones used by a billion people, list and describe four other types of computers. (P&H 1.1, §1.1) SOLUTION:  Desktop PC – relatively powerful, single user, personal machine  Server – more powerful, large workloads or many small tasks, reliable  Supercomputer – often tailor-mode for a specific task or set of tasks  Embedded computers – computers in automobiles, white goods, planes, printers, etc.  Tablet – positioned between smart phone and desktop/laptop  Warehouse scale – thousands of computers in a cluster  Watch / Wearable – small device designed to be worn. Potentially linked to companion device, such as a smart phone. 2. (5) Assume a color display using 8 bits for each of the primary colors (red, green, blue) per pixel and a frame size of 1280 x 1024. (P&H 1.4, §1.4) a. What is the minimum size in bytes of the frame buffer to store a frame? b. How long would it take, at a minimum, for the frame to be sent over a 100 Mbit/s network? SOLUTION: a. Frame buffer size (bytes) = 1280 x 1024 x (24/8) Frame buffer size = 3,932,160 bytes