1.2.3 Units

Given a text file with 1,000 characters where each character is stored using 8 bits, calculate the file size in kilobytes (KB). Use the formula: file size = bits per character x number of characters, and convert the result to kilobytes (1KB = 8,000 bits).

A digital library needs to store 1,000 ebooks. If the average size of an ebook is 2.5MB, calculate the total storage capacity required in gigabytes (GB). Use 1,000 bytes = 1KB, 1,000KB = 1MB, and 1,000MB = 1GB. Show your working.

Given a sound file with a sample rate of 44kHz, a bit depth of 16 bits, and a duration of 3 minutes, calculate the file size in megabytes (MB). Use the formula: file size = sample rate x duration (s) x bit depth, and convert the result to megabytes (1 byte = 8 bits, 1MB

Given an image with a colour depth of 24 bits, a width of 1920 pixels, and a height of 1080 pixels, calculate the file size in megabytes (MB). Use the formula: file size = colour depth x image height x image width, and convert the result to megabytes (1 byte = 8 bits, 1MB =

Explain why computers use binary to store data.

Explain why a nibble is an important unit of data measurement.