Unit 1 : Introduction Computer Overview Flashcards
What are the importance for studying computer architecture as a user?(3)
- Understand system capabilities and limitations
- make informed decisions
- Improve communications with information technology
What are the importance for studying computer architecture as a programmer?
- Create efficient application software for specific processing needs
What are the importance for studying computer architecture as a system architect or systems analyst? ( 2 )
- Specify computer systems and architecture to meet application requirement
- Make intelligent decisions about system strategy ( Cost, Quality & Time )
What are the importance for studying computer architecture as systems administrator / manager? ( 4 )
- Install, configure, maintain, and upgrade computer systems
- Maximize system availability and efficiency
- Optimize system performance
- Ensure system security
What are the importance for studying computer architecture as a web services designer? ( 4 )
- Optimize customer accessibility to Web Services
- Optimize web system configurations
- Select appropriate data formats, page designs and scripting languages
- Design efficient Web pages
What is IPO?
- Input , Process and Output
- The Process Model ( IPO )
List out examples of Input devices ( 4 )
- Mouse
- Keyboard
- Scanner
- Trackpad
List out examples of processing devices
- CPU
List out examples of output devices ( 4 )
- Monitor
- Printer
- Fax Machine
- Speaker
List out examples of storage devices ( 4 )
- Hard Drive
- Optical Media
- SSD
- Diskettes
What are the components that a computer must have? ( 4 )
- At least one CPU
- Memory to hold programs and data
- I/O devices
- Long-term storage
What is the purpose of hardware? ( 3 )
- Control input, output and storage components
- Process data by executing instructions
- Provided input and output
List out hardware components ( 4 )
- I/O Devices ( Input / Output )
- Storage Devices
- CPU
- Memory
What is the purpose of software? List out the types of software ( 3 )
- Instructions tell hardware exactly what tasks to perform and in what order
- Applications
- System software
What is data?
- It is a fundamental representation of facts and observations
What is the purpose of communications?
- Sharing data and processing among different systems
What does CPU includes?
- ALU ( Arithmetic / Logic Unit )
- CU ( Control Unit )
- Interface Unit
What do ALU do?
- Performs arithmetic and boolean logical calculations
What does CU do?
- Controls processing of instructions
- Controls movement of data within the CPU
What does interface unit do?
- Moves instructions and data between the CPU and other hardware components
- Bus : Bundle of wires that carry signals and power between different components
What is memory know as ? ( 3 )
- Primary Storge
- Working Storage
- RAM
8 bits is how many byte?
- 1
What does kernel do? ( 4 )
- Memory management
- Resource Scheduling
- Program Communication
- Security
What is stored inside the ROM? ( 2 )
- Bootstrap
- Initial Program Load ( IPL )
Operating System running order ( 5 )
- API
- File Management
- I/O
- Kernel
- Network Module
What is the full name for API?
- Application Program Interface
What is virtualization?
- Created, simulated, or carried on by means of a computer or computer network
- Things that are generated by computer ( sound, images )
List out the examples for Virtulization
- Virtual Memory
- Virtual Networks
- Java Virtual Machine
What are protocols?
- Common ground rules of communication between computers, I/O devices, and many software programs
- Set of rules and conventions that define how data is transmitted and received over a network
List examples of protocols ( 4 )
- HTTP
- Web servers and web browsers
- TCP/IP
- Betweeen computers on the Internet and local area network
- SATA
- Between storage devices and computers
- XML, RSS, SIP
- Other protocols example
What are standards?
- Document containing the details of an agreed upon method
List out standard example ( 4 )
- Computer Languages ( Java, C )
- Display Standards ( GIF, JPEG )
- Character Set Standards ( ASCII, Unicode )
- Multimedia Standards ( MP3, MPEG-2 )
What is the purpose of hardware communcation channels
- Establish physical connections between computer systems
List out the hardware communication channels ( 4 )
- Wire Cable
- Fibre Optic Cable
- Phone Lines
- Radio Waves
What is the purpose of interface hardware
- Handles communication between the computer and the communication channel
List out the interface hardware components
- Modem
- Network Interface Card ( NIC )
What are the purpose of software in communication?
- Establish connections
- Control flow of data
- Directs data to the proper applications for use