LE1 Flashcards
An electronic device, operating
under the control of instructions stored in its own
memory
A computer
What is the Information Processing Cycle
Input > Process > Output
A computer contains many electric, electronic, and
mechanical components known as _________
Hardware
Give 5 hardware in a computer system.
Input Device, Output Device, System unit, Storage device, Communication device
This hardware allows you to enter data and instructions into a computer
Input device
Hardware component that conveys information to one or more people
Output device
Hardware component case that contains the electronic components of the computer that
are used to process data
System unit
Hardware component that records (writes) and/or retrieves (reads) items to and from storage
media
Storage device
Hardware component that enables a computer to send and receive data, instructions, and
information to and from one or more computers or mobile devices
Communication device
Give 5 advantages of using a computer
Speed Reliability Consistency Storage Communications
Give 5 disadvantages of using a computer
Health Risks Violation of Privacy Public Safety Impact on Labor Force Impact on Environment
It involves reducing the electricity
consumed and environmental waste generated when
using a computer
Green computing
Give 4 strategies of green computing
Recycling
Regulating manufacturing processes
Extending the life of computers
Immediately donating or properly disposing of replaced computers
It is a collection of computers and devices connected together, often wirelessly, via communications devices and transmission media
Network
it is a worldwide collection of networks that
connects millions of businesses, government agencies,
educational institutions, and individuals
Internet
____, also called a ____ tells the
computer what tasks to perform and how to
perform them
Software ; Program
What are the 2 types of software?
System software and application software
What are the 2 types of system software?
Operating system and utility program
It is the process of setting up software to
work with the computer, printer, and other
hardware
Installing
develops software or writes the instructions that direct the computer to process data into information
Programmer
What are the 7 categories of computers?
Personal computers, Mobile computers and mobile devices, Game consoles, Servers, Mainframes, Supercomputers, Embedded computers
(PaMGaSaMSE)
It is a personal computer you
can carry from place to
place
Mobile computers
It is a computing device small
enough to hold in your
hand
Mobile devices
It is a mobile computing device designed for single‐player or multiplayer video games
Game console
It is a controls access to the hardware, software, and other resources on a network.
Provides a centralized storage area for programs, data, and information.
Server
It is a large, expensive, powerful computer that can handle hundreds or thousands of connected users simultaneously
Mainframe
It is the fastest, most powerful computer
Supercomputer
It is a special‐purpose computer that functions as a component in a larger product
Embedded computer
What are the 5 elements of an information system?
Hardware, Software, Data, People, Procedures
What are the 8 computer applications in the society?
Education Finance Government Health Care Science Publishing Travel Manufacturing
Give 5 examples of computer usage
Home User Small Office User Mobile User Power User Enterprise User
It describes a process in which two or more computers or devices transfer data, instructions, and information
Computer communication
Give the process of computer communications?
Sending device - Communication channel - Receiving device
Give 15 uses of computer communications
Web Web 2.0 Web folder Internet Wikis Email Fax Blogs Chat rooms Instant messaging Video conferencing Newsgroups VoIP FTP RSS
It allows users to send and receive short text messages on a phone or other mobile device or computer
Text messaging (SMS)
It allows users to send pictures and sound files
Picture Messaging
It allows users to send short video clips
Video Messaging
It allow people to connect wirelessly to the Internet from home, work, school, and in many public locations
Wireless Internet access points
It is a coffeehouse, restaurant, or other location that provides personal computers with Internet access to its customers
Cybercafe
It is a navigation system that consists of one or more earth-based receivers that accept and analyze signals sent by satellites in order to determine the GPS receiver’s geographic location
GPS
It is a Web application that combines services from two or more sources
Mashup
It is a collection of computers and devices connected together via communications devices and transmission media
Network
What are the 5 advantages of a network?
Facilitating communications Sharing hardware Sharing software Sharing data and information Transferring Funds
It is a network that connects computers and devices in a limited geographical area
LAN
It is a LAN that uses no physical wires
WLAN
It connects LANs in a metropolitan area
Metropolitan area network (MAN)
It is a network that covers a large geographical area
Wide area network (WAN)
It describes an Internet network on which users access each other’s hard disks and exchange files directly over the Internet
P2P
It refers to the layout of the computers and devices in a communications network
Network topology
It is an internal network that uses Internet technologies
Intranet
It allows customers or suppliers to access part of its intranet
Extranet
Give 10 communication standards
Ethernet Token ring TCP/IP Wi-Fi Bluetooth UWB IrDA RFID WiMAX WAP
It is a network standard that specifies no computer controls when data can be transmitted
Ethernet
It standard specifies that computers and devices on the network share or pass a special signal
Token Ring
It is a network standard that defines how messages are routed from one end of a network to another
TCP/IP
It identifies any network based on the 802.11 standard that facilitates wireless communication
Wi-Fi
It has a transfer rate of 1 or 2 Mbps
802.11
It has a transfer rate of up to 54 Mbps
802.11a
It has a transfer rate of up to 11 Mbps
802.11b
It has a transfer rate of 54 Mbps and higher
802.11g
It has a transfer rate of 108 Mbps and higher
802.11n
It uses short-range radio waves to transmit data
Bluetooth
It uses short-range radio waves to communicate at high speeds
UWB
It transmits data wirelessly via infrared (IR) light waves
IrDA
It uses radio signals to communicate with a tag placed in or attached to an object, animal, or person
RFID
It is any type of hardware capable of transmitting data, instructions, and information between a sending device and a receiving device
Communication device
It uses the cell phone network to connect to the Internet wirelessly from a notebook computer, a smart phone, or other mobile device
Wireless modem
It enables a computer or device to access a network
Network card
It is a central communications device that allows computers and devices to transfer data wirelessly among themselves or to a wired network
Wireless access point
It connects multiple computers or other routers together and transmits data to its correct destination on a network
Router
It connects several devices in a network together
A hub or switch
What are the 3 types of wired home networks?
Ethernet
Powerline cable
Phoneline
The amount of data that can travel over a communications channel sometimes is called the ________
Bandwidth
It is the time it takes a signal to travel from one location to another on a network
Latency
It carries one or more signals
Transmission media
It transmit multiple signals simultaneously
Broadband
