TLE 10 1ST TERM

PECS

the skills and qualities taht help a person become a successful entrepreneur or employee

network administrator

manages and maintains network infastructure

computer repair technician

evaluates and improves computer systems

repair shop

troubleshooting, cleaning and maintainance

manage IT service

does regular support, monitoring, and helpdesk

IT consulting firm

gives advice, security and cloud solutions

cyber security services

does security audits, and vulnerability checks

static electricity

an accumulation of electric charge in an insulated body

ESD

the release of static electricity when objects come in contact

IT support specialist

helps users troubleshoot and resolve technical issues

CPU

acts as the brain / processes all instructions

RAM

temporarily stores active data and instructions

NIC

connects a computer to a network

BIOS/UEFI

initializes and tests hardware during booting

GPU

accelerates graphics rendering

iGPU

typically low powered and shares the same system with the RAM and CPU (kind of GPU)

dGPU

standalone graphics card or chip with its own dedicated memory (kind of GPU)

motherboard

a printed circuit board and allows the parts to function together

CPU socket

holds the processor

RAM slots

holds memory modules

BIOS/UEFI chip

stores startup firmware

PCI/PCIe slots

allows expansion cards

chipset

coordinates data flow

SATA/IDE connectors

connects storage drives

I/O ports

connects external ports

chipsets

coordinates data flow to and from key components

northbridge/memory controller

links CPU and RAM in older designs (under chipsets)

southbridge/ I/O controller

handles slower peripheral communication (under chipsets)

storage connectors

links HDDs, SSDs, and optical drives

I/O ports

connects external devices

PSU

pumps electricity to every part

graphics, network, and sound

what are the expansion cards?

hard disk drive

slow, permanent storage

HDD

consists of rapidly spinning magnetic platters and mechanical read/write heads thataccess and alters data

SSD

moders, high speed storage device that uses non-volatile flash memory to persistently save files, photos, and applications

fan and heat sink

what are the two cooling mechanisms?

fan

moves hot air away

heat sink

absorbs heat from the CPU

data cables

carry communication between devices

monitor cable

creates an image on the monitor

power cables

delivers electricity to devices

softwares

the set of programs or instructions that make a computer useful

system software

works close to the computer system/ manages hardware resources, security startup, and maintenance

application software

close to the users task/ helps produce, communicate, browse, create, design, etc

system and application software

what are the 2 kinds of software?

operating system

manages hardware and other software on the computer/ supports application execution

device drivers

translators for hardware/ converts operating system instructions to device specific commands

firmware

instructions inside the hardware

utility software

the system maintenance team

case

protects the components of the motherboard

power on self test

what does POST stand for?

POST

checks essential hardware

thermal paste

compound between the CPU and heat sink that improves heat transfer

ESD

electrostatic discharge that can damage electronics

grounding

safe path that helps control static charge

standoff

spacer that lifts the motherboard from the case

front panel connectors

small cables for power switch, reset and LED