Information Technology Reference
In-Depth Information
Figure.1 11 Components of a typical desktop computer system.
How Data Is Represented on.a Computer
The smallest unit of data in a computer is a bit. A bit is a single binary
digit, with either a 1 (on) or 0 (off) value. Eight bits can combine to
make a byte , which is an 8-digit binary number, as shown in Figure 1.12.
bit A single binary digit, with a value of either
1 (on) or 0 (off).
byte An 8-digit binary number, composed of
eight bits.
Figure.1 12 Computers combine eight binary digits (bits) to make a byte.
Modern systems work with thousands, millions, and even billions of
bytes at a time. Table 1.1 lists the names for certain multiples of bytes.
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