EECS 1012 Lecture Notes - Lecture 32: Graphical User Interface, Desktop Metaphor, Scripting Language
13 Jun 2018
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EECS 1012 Lecture 32 Notes
Introduction
Graphical User Interfaces
• Batch programs are well suited for routine transaction processing applications, such as
credit card billing and payroll.
• As we noted above, command line interfaces also provide the aility to ath
commands together to form pseudo programs, known as shell scripts
• Just scripts, which will be executed as a unit
• These are not true batch programs, as they are still intended for interactive use.
• Nonetheless, Windows users sometimes refer to these programs as batch programs or,
more commonly, as bat files.
• Most command line interfaces provide additional commands that are intended
especially for the creation of powerful scripts.
• The overall command structure is then referred to as a command language, or scripting
language.
• The topic of command languages is considered further
• There is an example of a JCL procedure in Supplementary.
• The mouse-driven, icon-based graphical user interface or GUI (pronounced gooey) has,
for all practical purposes, replaced the command line interface as the prevalent
interface between user and computer.
• The GUI has been implemented in many forms.
• The best-known implementations are the user interfaces present on the Apple
Macintosh computer and on IBM-type PCs that are equipped with the Microsoft
Windows interface.
• Most other computer systems offer a similar interface.
• A picture of a typical Windows XP screen
• The screen of a Linux computer running the KDE shell appears
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