What are the meanings of these key words? ? ! pixel, mega pixel, colour depth, bit, byte.
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PIXEL: a minute area of illumination on a display screen, one of many form which an images is composed.

MEGAPIXEL: a unit of graphic resolution equivalent to one million or (strictly) 1,048,576 pixels.

COLOR DEPTH: number of bits used to indicate the color of a single pixel, in a bit mapped image or video dram buffer or number of bits used for each color component of a single pixel.

BIT and BYTE: amount of computer memory are often expressed in terms of mega bytes or gigabytes

Solution: the categorization of functional and non-functional requirement are as follows: some of the more typical functional requirements include: • business rules• transaction corrections, adjustments and cancellations• administrative functions• authentication• authorization levels• audit tracking• external interfaces• certification requirements• reporting requirements• historical data• legal or regulatory requirementswhile,some typical non-functional requirements are: • performance – for example response time, throughput, utilization, static volumetric• scalability• capacity• availability• reliability• recoverability• maintainability• serviceability• security• regulatory• manageability• environmental• data integrity• usability• interoperability