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CSC 221 - NOVA MIDTERM questions fully solved &updated.
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CSC 221 - NOVA MIDTERM questions fully solved &updated.
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CSC 221 - NOVA MIDTERMquestions fully solved
&updated
Hardware - answer The physical components of a computer.
Software - answer the programs and other operating information
used by a computer.
CPU - answer Central Processing Unit; the brain of the computer.
Arithmetic Logic Unit (ALU) - answer The part of the central
processing unit that performs arithmetic computations and logical
operations.
Control Unit - answer Component of a processor that directs and
coordinates most of the operations in the computer.
Memory - answer Hardware that stores data;
RAM
RAM - answer Random Access Memory
Keyboard - answer An input device that enters data with letters,
numbers, symbols, and special function keys.
,Screen - answer Hardware for output that displays characters and
images to a user.
Clock signal - answer The speed at which a CPU runs instructions
Gigahertz (GHz) - answer One billion ticks of the system clock per
second.
Millions; Megahertz (MHz)
Computer Drive - answer stores data even after electricity is
turned off
(documents, photos/videos, programs, etc.)
*Slower to access than Memory(RAM)
How does a CPU run a program? - answer 1. The CPU copies the
program and needed data from the computer drive into memory
(RAM)
2. Runs the program from Memory (RAM)
3. More complex programs may only have portions copied into RAM
hard disk drive (HDD or hard drive) - answer computers primary
device for permanent storage of software and documents
**SPINNING DISK**
Solid State Drive (SSD) - answer A storage device that uses the
same kind of memory that flash drives use but that can reach data
, in only a tenth of the time a flash drive requires. **Not a disk - no
moving parts**
Cache - answer An intermediate storage area;
"small fast memory"
How does a CPU access Cache? - answer 1. The memory stores
program instructions and data.
The CPU copies a few instructions into a small cache, and then runs
those instructions.
2. The cache is small, so can't fit all the program's instructions.
3. Repeated copying of parts occurs, which takes time.
Non-volatile - answer Data retained even when power is turned off.
Ex; hard disk drives and solid-state drives (HDD and SSD)
Volatile Data - answer RAM, cache, and registries contain volatile
data.
-Data in transit between a storage medium and a CPU is also volatile
data.
-DISAPPEARS as soon as the computer is turned off.
USB Flash drive - answer A small removable data storage device.
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