Windows 2.0

1. Windows Operating System
Windows 2.0

2. History of Microsoft Windows
•In 1983 Microsoft announced the
development of Windows, a graphical
user interface (GUI) for its own
operating system (MS-DOS), which
had shipped for IBM PC and
compatible computers since 1981.
•Since then, Microsoft has shipped
many versions of Windows, and the
product line has changed from a GUI
product to a modern operating
system.

3. Oct 85
Nov 87
Dec 87

May 88
Mar 89
May 90
Timeline
Windows 1.0
Windows 2.0
Windows 2.03
Windows 2.10
Windows 2.11
Windows 3.0

4. Windows 2.0

5. What is Windows 2.0 ?
Windows 2.0 was released in October
1987 and featured several
improvements to the user interface and
memory management.
Windows 2.0 was a 16-bit Microsoft
Windows graphical user interface-
based operating environment that
superseded Windows 1.0.
Windows 2.0 allowed application
windows to overlap each other and also
introduced more sophisticated
keyboard-shortcuts.

6. Comparison with 1.0
Windows 2.0 allowed application
windows to overlap each other, unlike
its predecessor Windows 1.0, which
could only display tiled windows
Windows 2.0 also introduced more
sophisticated keyboard-shortcuts and
the terminology of "Minimize" and
"Maximize", as opposed to "Iconize"
and "Zoom" in Windows 1.0.

7. Different
versions

8. took advantage of the improved
processing speed of the Intel 286
processor, expanded memory, and inter-
application communication capabilities
made possible through Dynamic Data
Exchange (DDE).
Windows 2.0
took advantage of the protected
mode and extended memory capabilities of
the Intel 386 processor. Subsequent
Windows releases continued to improve
the speed, reliability, and usability of the
PC as well as interface design and
capabilities.
Windows 2.03

9. released on 27 May 1988. These versions
can take advantage of the specific features
of the Intel 80286 and Intel 80386
processors.
Windows 2.10
released on March 1989 with
Windows/286 and Windows/386 editions,
and some minor changes in memory
management, AppleTalk support and faster
printing and updated printer drivers.
Windows 2.11

10. Windows 2.11 two different
editions:
Windows/386
still ran in real mode, but could make
use of the high memory area.
employed the 386 virtual 8086 mode to
multitask several DOS programs, and
the paged memory model to emulate
expanded memory using available
extended memory.
Windows/286

11. Windows 2.03
Requirements
- MS-DOS version 3.0
- Two double-sided disk
drives or a hard disk
- 512K of memory or greater
- Graphics-adapter card
Changes
- Overlapping windows instead of tiled
windows
- LIM Version 4.0 expanded memory
support
- Dynamic Data Exchange (DDE)
support
- SMARTDrive disk-cache program
included
- Revised .FON format for screen fonts

12. Windows 2.03
Changes
- NEWFON.EXE included to convert 1.x
font format to 2.x font format
- Revised Paint file format
- CVTPAINT.EXE included to convert 2.x
Paint file format to 1.x format
- About command moved to File menu
from System menu
- Printer Timeouts option added to
Control Panel
- Mouse Acceleration option added to
Control Panel
- Warning Beep toggle added to Control
Panel
- Notepad About command reports
- Remaining Free Space
- 3812 Pageprinter no longer supported

13. Windows 2.10
Requirements
- 512K Memory
- MS-DOS version 3.0 or later
- One floppy-disk drive AND one hard
disk (note that a hard disk is
now required)
- Graphics adapter card (the box notes:
IBM EGA, IBM VGA, IBM 8514,
IBM CGA, Hercules Graphics
Card, or compatibles)
- Use of the Microsoft Mouse is
optional
- Packaged with 5.25-inch 1.2 megabyte
disks OR 3.5-inch 720K disks,
plus an order form for free 360K
5.25-inch disks

14. Windows 2.10
Changes
- New HIMEM.SYS driver allowing the
use of the first 64K of extended
memory to store part of
Windows, giving approximately 50K
additional conventional memory
inside Windows
- Support for approximately 65 more
printers than version 2.03,
bringing the total supported
printers to approximately 127
- Support for additional computers
- Support for additional display devices

15. Windows 2.11
Requirements
Same as Version 2.1
Changes
-Accounts for memory freed by XMS
when computing the maximum
swap size allowed
-Increased minimum bankable memory
required for large frame EMS
-Setup program no longer terminates
when incompatible driver is
encountered
-Setup corrected to permit set up on
512K machine with MS-DOS
version 3.3

16. Windows 2.11
Changes
-Updated COMM.DRV to solve
handshaking problems at 9600 bits
per second (BPS)
-Updated HPPCL.DRV driver that
supports LaserJet series IID,
Olivetti LP 5000, Toshiba
-PageLaser 12, and Intel Visual Edge
-Updated PSCRIPT.DRV driver that
supports Olivetti LP 5000 in
PostScript mode
-Printing speed increased
-Windows/386 WINOLDAP.MOD
modified to support high- resolution
displays

17. Windows 2.11
Additions
-AppleTalk library (must accompany
the new PostScript driver)
-Toshiba 24-pin printer driver
- 8514/a driver for Windows/386
- /E switch to adjust large frame EMS
threshold

18. Application support
The first Windows versions of
Microsoft Word and Microsoft Excel
run on Windows 2.0.
Third-party developer support for
Windows increased substantially with
this version
However, most developers still
maintained DOS versions of their
applications, as Windows users were
still a distinct minority of their market.

19. Applications shipping with
Windows 2.0:
CALC.EXE
CALENDAR.EXE
CARDFILE.EXE
CLOCK.EXE
CONTROL.EXE
MSDOS.EXE
NOTEPAD.EXE

20. WRITE.EXE
TERMINAL.EXE
PAINT.EXE
REVERSI.EXE
PRACTICE.WRI
CLIPBRD.EXE
MSDOSD.EXE

21. Legal conflict
with Apple

22. On 17 March 1988, Apple filed suit
against Microsoft and Hewlett-
Packard, accusing them of violating
copyrights Apple held on the Macintosh
System Software
Apple claimed the "look and feel" of
the Macintosh operating system,
taken as a whole, was protected by
copyright and that Windows 2.0
violated this copyright by looking
extremely similar to it.

23. Windows 2.11 was
superseded by
Windows 3.0 in May
1990.