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Business Computing & Applications- Technology Bites (Week 4: E…
Business Computing & Applications- Technology Bites
Week 2: Computer Systems
Chapter 1: Why Study Computers and Digital Technologies?
Digital Technology
Tools, materials and processes
Helps
Solve
human problems
Classified as digital electronics
Computers
Combines
Hardware
and
Software
Process
and
Store
the data
Produce some useful
Output
Accept
Input
of data
Computer functions
Hardware
Tangible components of a computer or digital device
Software
Comprises the electronic instructions that governs the fuctioning of a computer system
Types of computers
General-purpose computers
Able to run
Any Number
of software applications
Types of General Purpose Computer Systems
Server
Supercomputer
Personal Computer (PC)
Special-purpose computers
Designed primarily for
One
particular function
Examples
Smart Home Appliance
Embedded Computer
E-book reader
Chapter 2: Hardware Designed to Meet the Need
Key Components
Removable Storage
Secondary storage
Store data permanently without need for electricity
Magnetic storage
Magnetic properties of iron oxide particles to stores bits and bytes more permanently than RAM
Optical Storage
Uses optical laser to burn pits into surface of highly reflective surface
Solid State Storage
uses flash memory to store bits
USB Flash Drive
Flash memory card
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Video Memory
Storage
Storage Device
Read data
Write data
System Storage
RAM
Cache
Video RAM
ROM
CMOS
Networking
Memory
The bit (Binary Digit)
1's and 0's that allow representation, storage and manipulation of data
Data in computers are stored using bits
Security
Processor
Microprocessor
Sometimes called a chip or processor
Combines microscopic electronic components on a single integrated circuit
Processes information according to software instructions
Also known as CPU
CPU Speed
Measured in GHz
OS
System Software
Runs the computer system
Operating Software
Set of computer programs that runs/controls the computer hardware
Acts as interface between software and hardware
Graphic User Interface (GUI)
Multi-Tasking
Device Driver
Utility Programs
Disk Management tools
Controls the hardware
Consists of several files which at least one of which is an .exe file
Stores instructions in binary language needed to run the software
Application Software
Programs written to perform tasks
Provides services for people
Word processor, spreadsheets, database
Supports people's functions
Groups and organizations use app software to help people gain benefits
I/O Concepts
Input Devices
Assists in capturing and entering raw data into the computer system
Touch Screen
Gamepad
Output Devices
Allows observation of the results of computer processing with one or more of one's senses
Liquid Crystal Display (LCD)
Flat panel
Week 3: Internet and WWW
History of the internet
WorldWideWeb (WWW)
Interconnection of Networks
Uniform Resource Locator (URL)
Web Creation Technologies
HTML
Cookies
Plug-ins
Network Architectures
Client/Server
Peer-to-Peer
Internet Communication Protocol
Hyper Texrt Transfer Protocol Secure (HTTPS)
Week 4: E-Commerce
Roots of E-Commerce
Electronic Data Interchange (EDI)
Transaction Processing
Btach Processing
Online Transaction Processing
Types of E-Commerce
B2C
B2B
C2C
Brick-and-Mortar stores may also have E-tailing
Benefits and Challenges
Benefits
Convenience
Lesser operating costs
Lesser manpower
Challenges
Security and Privacy issues
Unequal access to technology of E-Commerce
Examples of E-Commerce
eBay
Amazon
Carousell
Hachitedch (Challenger)