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Information and Communication Technology Applications

Table 2.5: History of Computers During the Year 1978–till Date
Notes
Year Invention

1978 The 4.77-MHz 8086 microprocessor, introduced by Intel.
1979 The 4.77-MHz 8088 microprocessor, introduced by Intel.
1980 The first Winchester 5.25-inch hard disk drive, introduced by Seagate
Technologies. The XENIX OS, a portable and commercial version of Unix,
developed by Microsoft. The 8087 math coprocessor, introduced by Intel.
1982 The 6-MHz 80286 microprocessor, introduced by Intel. MS-DOS 1.1, released
by Microsoft. Lotus 1-2-3, released by Lotus Development. Microsoft released
Microsoft COBOL for MS-DOS. Mouse Systems introduced the first commercial
mouse for the IBM PC.
1983 AT&T Bell Labs designed C++. IBM announced the IBM PC-XT Model 370.
Microsoft formally announced Microsoft Windows. Novell introduced the
NetWare network operating system for the IBM PC.
1984 The PC-AT model of microcomputer, introduced by IBM. Microsoft released
MS-DOS 3.0 for PCs. Hewlett-Packard introduced the LaserJet laser printer
Philips announced CD ROM players for personal computers
1985 Intel introduced the 16-MHz 80386DX microprocessor. Microsoft introduced
Windows 1.0.
1986 Microsoft released MS-DOS 3.2. IBM boosted the speed of the IBM PC AT by
replacing the CPU with a 8-MHz Intel 80286.
1987 Intel introduced the 20-MHz 80386DX microprocessor. IBM and Microsoft
announced Operating System/2 (OS/2) Windows 2.0, introduced by Microsoft.
The 80387 math coprocessor, introduced by Intel.
1988 Intel introduced the 25-MHz 80386DX microprocessor. Microsoft released MS-
DOS 4.0. Intel introduced the 16-MHz 80386SX microprocessor. Hewlett-Packard
introduced the HP DeskJet inkjet printer
1989 The 80486 microprocessor, introduced by Intel. Microsoft released Word 5.0 for
DOS.
1990 Intel introduced the 33-MHz 486 microprocessor. Windows 3.0, introduced by
Microsoft.
1991 Microsoft released MS-DOS 5.0.
1992 Windows 3.1, introduced by Microsoft.
1993 Microsoft release MS-DOS 6.0. Pentium, a family of 32-bit microprocessors
introduced by Intel.
1994 Pentium pro, successes to the Pentium, introduced by Intel. Windows 95, an
operating system with a graphical user interface for 8386 and higher processors,
released by Microsoft.
1997 Pentium II, a Pentium pro with MMX instructions introduced by Intel.
1998 Celeron, a low-priced version of the Pentium II for desktop PCS Introduced by
Intell. Windows 98, released by Microsoft.
1999 Pentium III with 450/500 MHz clock speed introduced by Intel.
2000 Windows 2000 introduced by Microsoft.
2001 Pentium 4, the latest in Pentium series, introduced by Intel.

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