Intro to Computers
Terms
undefined, object
copy deck
- LAN
- Local area network-uses local satelite
- Worm
- program that copies itself repeatedly in memory until there is no space left.
- DL
- Distance Learning
- Name two storage mediums
-
Floppy drive
zip drive - Intellectual Property
- Work created by inventore, authors, and artists
- Malware
- types of program virus- act without users knowledge and alters computer programs
- What is memory?
-
temporary holding place for data and instructions.
ex.) volatile (RAM)
non-volatile (ROM)
- Emerging technology
- ex.) virtual reality, and robots
- Computer virus
- potentially dangerous computer program that infects your computer negatively and withough you knowing it.
- E-commerce is?
- A financial business transaction that occurs over an electronic network
- How does a floppy store data?
- stores data on tracks called grooves broken into sectors broken into clusters
- Another name for e-commerce
- e-business
- Health risks to computer users
-
1.) carpel tunnel
2.) eye strain
3.) ethics - GPS
- Global positioning system
- disk controllers -2 types
-
EIDE
SCSI - Modem
- communication device:dials uo, sends 2 kinds of signals analog and digital
- 3 signs of a virus
-
1.) unusual message or image
2.) available memory id down
3.) program or file is missing - Digital divide
- problem of those who have access to the internet and those who don't
- Telecommunicating
- Working from home
- CBT
- Computer based training
- Norton Utilities
- A popular anti-virus software
- Firewall
- hardware that has software that restricts access to data and information on a network.
- Ways to keep the computer secure and prevent from loss
-
1.) access control (passwords, id's, badge...)
2.) voice recognition
3.) face recognition
4.) signature - WBT
- Web based training
- Encryption
- Process of converting readable to unreadable to prevent unauthorized access
- Name a type of home network
- ethernet- requires each computer to have a powerline cable. Hook up through a computer.
- Analog signal
- continous electrical signal
- 5 things needed for a communication device
-
1. sending device
2. communication device
3. channel/path
4. communications device
5. receiving device - SPAM
- unsolicited e-mail messages
- WAN
- Wide area network-uses international satelites
- Networks
- Collection of computers and devices that share the same resources
- Spyware
- program put on computer that secretely collects info on user
- Cyber crime
- online or internet based illegal acts
- Cookies
- any info put into the computer about self
- Digital Signal
- electrical impulses
- Hacker
- someone who tries to access computer information illegally
- Examples of home networks
-
1.) Phone line network
2.) PLC- power line cable
3.) Ethernet
4.) Home RF - Time bomb
- A computer virus that activates on a certain date/time
- ISDN
-
Integrated services digital network
ex.) verizon, adelphia - 3 tips to prevent a virus
-
1.) install anti-virus program
2.) check security settings
3.) back up files - Sending device examples
-
1.) pc
2.) handhelp
3.) cellphone - 2 controls to use to ensure your computer hardware's safety
-
1.) lock door
2.) bolt down computer - Trsnsfer rate
- speed in which you can access data
- Macro Virus
- uses the macro computer language to hide (usually in word or excel)
- Power surge
- causes system failure due to ireased amount of electricity