(A) The smallest unit of data in a computer is called Bit (Binary Digit). A bit has a single binary value, either 0 or 1. In most computer systems, there are eight bits in a byte. The value of a bit is usually stored as either above or below a designated level of electrical charge in a single capacitor within a memory device. A Kilobyte (kb or K byte) is approximately a thousand bytes (actually, 2 to the power, or decimal 1,024 bytes). As a measure of computer processor storage and real and virtual memory, a megabyte (abbreviated MB) is 2 to the power byte,or 1,048,576 bytes in decimal notation. A Gigabyte(pronounced Gig-a-bite with hard G’s) is a measure of computer data storage capacity and is “roughly” a billion bytes. A gigabyte is two to the 30th power, or 1,073,741,824 in decimal notation.