MOD 4.1 Flashcards
1
Q
Input-Output Devices
A
- Slowest Components
- Diverse types
- Components that interact most with the user
1
Q
Common I/O Devices
A
- Input
o Keyboard
o Mouse
o Scanner - Storage
o Magnetic Disks
o Flash drives - Output
o Display screen
o Printer
2
Q
Parallel (How?)
A
Simultaneous transfer of multiple bits
3
Q
Serial (How?)
A
Data transferred one bit at a time
4
Q
Synchronous (When?)
A
Using a timing mechanism (Clock)
5
Q
Asynchronous (When?)
A
Event-based
6
Q
What are the importance of Hard Disk Drives?
A
- Long term storage of files
- Nonvolatile
7
Q
Is HDD cost effective?
A
Yes, much cheaper than a Solid State Drive
8
Q
Inside of a HDD
A
-Magnetic
- Moving parts
– Slow
– Damage-prone
9
Q
What is Seek Time?
A
Time to get to the track containing the sector
10
Q
What is Rotational Latency?
A
Time to get to the desired sector
11
Q
Disk Bandwidth
A
Number of bytes transferred per unit of time
12
Q
What is another term for Disk Bandwidth?
A
Transfer Rate
13
Q
HDD vs SSD
A
- HDD
o Cheaper per byte
o Needs more power
o Fragile - SSD
o Fast transfer rates
o Smaller form factor
o No moving parts
o Much more expensive per byte
14
Q
What is Form Factor?
A
Physical Characteristics
