Ch. 2 Flashcards
What is hardware?
- Digital devices you can touch
- Digital devices process electronic signals in 1’s and 0’s
- The physical parts of a computing device
Examples of hardware?
- Desktop computers
- Laptop computers
- Mobile phones
- Tablets
- E-readers
- Storage devices such as USB drives
- Input devices such as keyboard, mouse, scanners, or styles
- Output devices such as printers and speakers
What is kilobyte?
One thousand bytes
What is megabyte?
One million bytes
What is gigabyte?
One billion bytes
What is terabyte?
One trillion bytes
What is Moore’s Law?
An observation made by Gordon Moore in 1965 that says that the number of transistors or the amount of computing power on a chip will double every 2 years
What are the components of a PC?
- Circuit board
- CPU (central processing unti)
- Memory
What is a circuit board?
Also known as the motherboard that holds the CPU, memory, and storage components
What is the CPU?
Carries out the commands sent to it by the software and returns results
What is memory?
Temporary working area called random-access memory (RAM)
Applications are loaded into RAM to run faster and when the computer is powered off, the RAM is cleared
What is storage?
Longer, permanent storage of data.
What are some examples of storage?
- Hard disk- permanently affixed to motherboard using cables
- Removable media- USB drives that can be connected and removed for use on a different computer
What are input/output devices?
Allows the addition of devices for input and output purposes via ports on the motherboard or today by USB (ex. keyboard for entering data or printer for printing output)
What type of port does a CAT5 use and what does it connect?
Port: Ethernet port
Connect: Network/Internet to computer
What type of port does a Serial ATA use and what does it connect?
Port: SATA port
Connect: Motherboard to disk drives
What type of port does a USB cable use and what does it connect?
Port: USB port
Connect: peripherals to computer
What type of port does an HDMI use and what does it connect?
Port: HDMI port
Connect: high quality graphic displays (monitors) to computer
What does RAM stand for?
Random-access memory
What does CPU stand for?
Central processing unit
What two components can make your computer fast?
- RAM
- CPU
These both equal to speed for your computer
What is integrated computing?
The process of linking together different computing systems and software applications physically functionally, to act as a coordinated whole.
Examples of integrated computing?
- Transportion: cars/planes/motorcycles
- Appliances: refrigerator/thermostats
What are wired devices?
They have limited mobility because they must be directly connected via a wire to the network (either closed network or the internet)
What is a wireless device?
They have the portable connectivity when paired with services like 3G/4G or wifi
What is cloud computing?
- Makes powerful portable computing possible by utilizing cloud services
- Cloud services remove the burden of storage and operational ability from your device
- Potential for security issues as your documents are stored on a server
What is E-Waste?
It is electronic waste and is a term for electronic products that have become unwanted or non-working. Things like cell phones, remote controls, cables and wires, cartridge games, and consumer electronics.
this can be hazardous waste
Who does E-Waste hurt?
Effects global communities
Where should we recycle?
- epa.gov
- earthday.org
