Summary
Summary IT Theory - Hardware
- Course
- Information Technology
- Institution
- 12th Grade
Full summary, according to SAGS document, of IEB Information Technology Theory - Hardware section.
[Show more]
Content preview
HARDWARECPU
Measuring
CPU (Central Processing Unit) cores
legquad , dual
&
-
chip that has
primary responsibility for interpreting commands and
running programs
components ( all containing registers + connected to
memory via FSB) clock speed in GHz
CU (Control Unit) cache in MB
↳ controls execution of each instruction
↳ tells ALU , I10 devices how respond
memory ,
to to a
program's instructions
ALU CArithmetic
Logic Unit)
↳
performs arithmetic +
logical operation/ calculations on
integer numbers
↳ break store in
down current instruction registers
-> Accumulator
=
register that stores the result of each execution (loaded from saved to RAM)
Registers (types
:
accumulator, address register storage register)
,
Store
↳ current instruction its data +
memory
+
access
↳ made from SRAM
↳ Word size =
width of register
+ data bus
↳ if 32 bit processes data in 32-bit ( :. 64 bits 2 phases)
7 doesn't meaneaster
te in
groups
if 64 bit >
processes data in 64-bit groups (... 64 bits in I phase
Types of processing
Serial processing processing instructions
-> one at a time
Parallel processing ->
multiple processors the same job
Isplit up between them (
,
processing
Em
Multi-processing >
multiple physical cores that share the
processing load
thread-set of instructions
↳ SMP
(Symmetrical MultiProcessing) =
multiple processors treated
equally instance of a computer
process =
ASMP program
-
(Asymmetrical MultiProcessing) =
different processors assigned special tasks being executed
Hyper-threading - multiple registers (i logical cores) that execute different threads of a
program
->
appears to execute
simultaneously
CO-Processors -
"Assistant" to CPU by taking
over burden of some of the
processing (process in parallel to <Pul
GPU -s takes task of complex mathematical geometric calc . needed for
graphics rendering (+ scientific computations)
->
Graphics card-u main components -> motherboard connection for data power
->
processor to render each pixel
(VRAM) to
memory to store details abt each pixel store completed pics temporarily
monitor connection view
images
-> to
->
Integrated graphics (GPU embedded on CPU , shares system RAM instead of Separate VRAM)
Advantages
->
- cost
+
->
less heat power
usage
Maths co-processor to
helps ALL process complex calculations
using numeric data
Advantage processed faster.
-> is calc .
improving performance
Disadvantages
-> In cost ,
required motherboard space , greater power consumption
CPU speed
Improving
->
->
Hyperthreading (1) logical core) -
Register size Secondary storage latency
-
Multiprocessing (11 physical core) -
Bus size
->
Buffers
->
Increasing level 1 ,7 , 3 Co-processors
->
/clock multiplication
cache Overclocking
-n
Latency to
time taken for a component to respond (blatency =>Tefficiency) (latency
= wasted clock ticks)
Seek time
- time taken for read/write head to find the
right track on
platters
Access time -> time taken to access data from HDD (latency +
seek time)
,
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ricciwaksman. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R100,00. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67232 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now