HCA Automation Working Group
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Transcript HCA Automation Working Group
AGENDA
Articles
Chapter 3: Computer Hardware
Chapter 4: Computer Software
Team Work
Open Systems Diagram
Input
Conversion
Process
Feedback
Environment
Output
CH.3: Computer Hardware
Major Components:
CPU--ALU, Control Unit, Registers
Primary Storage--ROM, RAM, Cache
Secondary Storage--Tape, Disks, DASD, Optical Disks, Smart Card
Input Units--Keyboard, Mouse, Scanner, Handwriting, Voice
Output--CRT, LCD, Printers, Voice
Types of Computers: Supercomputer, Mainframe, Minicomputer,
Workstation, PC, Laptops, PDA
Technology is a Fast Moving Train!
Remember: Computers are only tools. What is the best tool for the task-that should determine what is used.
CH.3: Computer Hardware (cont)
Hard Drive
Media Types (floppy, Zip, CD, DVD, tape)
Cell Phone, PDA, MP3 player
Cables
Boards
SCSI, Firewire, USB, USB 2, Parallel
USB Drive
What are the potential security implications and concerns?
CH.4: Computer Software
Software Tells Hardware What to Do
Programming Languages
First-Generation--Machine Language
Second-Generation--Assembly Language mnemonic AD, SUB
Third-Generation--Procedural FORTRAN, COBOL, BASIC, PASCAL,
C, C++ [Page 83, Exhibit 4.1]
Fourth-Generation--SQL, DBMS, Spreadsheets
Query and Dbase abilities that simplify retrieving data from Dbase
Code generation abilities that produce programming statements
2 Other Approaches: CASE and Object Oriented
CH.4: Computer Software (cont.)
Language Translators
Assemblers
Compilers--syntax analysis, code generation, optimization
Interpreters--slower than compiled
System Management Software
Operating System--Windows 98, NT, 2000, XP, Unix, Mac OS
Accepts and executes commands and requests
Manages, loads and executes programs
Manages hardware resources of the computer time-slicing
Interface--command-based, shells (Windows 3.1), GUI
Utility Programs
Programs that support computer operations
Programs that provide generalized file manipulation
Generalized computational programs
CH.4: Computer Software (cont.)
Application Software--General Purpose
Word Processors edit capabilities
Desktop Publishing
Spreadsheet Software VisiCalc, macros
Statistical Packages SPSS, SAS
Database Management Software
Integrated Software Packages What are the advantages?
Disadvantages?
Application-Specific Software:Program designed to solve a
single somewhat specifically designed problem.
In-house development
Purchased or leased--COTS
Modify an existing package
Integrated vs. Interfaced
Open Systems Interconnection (OSI) Model
The OSI Reference Model describes seven layers of related functions
that are needed at each end when a message is sent from one party
to another party in a network. An existing network product or
program can be described in part by where it fits into this layered
structure.
For example, TCP/IP is usually packaged with other Internet
programs as a suite of products that support communication over the
Internet. This suite includes the File Transfer Protocol (FTP), Telnet,
the Hypertext Transfer Protocol (HTTP), e-mail protocols, and
sometimes others. Although TCP fits well into the Transport layer of
OSI and IP into the Network layer, the other programs fit rather
loosely (but not neatly within a layer) into the Session, Presentation,
and Application layers.
Team Assignment
Choose one of the exercises from the chapters discussed
today. Your team may choose anyone you like an
address at least two points or questions in the exercise.