7/25/2019 TEJ3M Notes
1/5
Removing RAM
Power of the computer
Remove the case
The RAM looks like a thin Slide
Use both thumbs to careully depress the locking levers and do it slowly so
that u dont pop !MM into the air
Take the RAM out by holding it rom the top use gloves i necessary
Removing videocard
Uninstall all the current video card sotwares
Power of the computer
"pen the computer
ischarge all the static charge by wearing antistatic wrist wrap connected to
a grounded ob#ect
isconnect all internal cables connected to the graphics hardware
locate unscrew$unclip graphics card rom the case%s mounting bracket
&ently pullout the e'pansion slot lever to remove the card rom the slot
Slide the card out(remove it rom computer and keep it in an antistatic bag
Removing hard drive
)ack up all your data(Turn of the computer and unplug everything rom the
back
"pen the computer case
*ocate the harddrive
Push the lever$Unscrew rom the cage to loosen the harddrive
Slide it out gently using both hands
Remove the !+ cable and the power cord
Remove the harddrive and keep it in an antistatic bag
,heck disk
7/25/2019 TEJ3M Notes
2/5
Used to check the -le system and the status o the system%s harddrive%s
,hecks your hardrive or errors and repairs them i it can
,hecks or bad sectors
Used when harddrive might not be uncitoning properly(data stored notwritten properly
isk deragmentor
"vertime disks become ragmented and the computer slow down as it has to
look at many places to -nd a -le
A tool that reaaranges the data on your computer
Reunites ragmented -les so that the system can run more e.ciently
Makes P, aster as it takes less time to -nd the same -le
!mportant utility sotware/ Malwarebytes(Search and estroy( ,,leaner
,tl Alt el to open Task manager
+'amining processes/ +'amine the perormance tab and i u notice that it is
unusually high(go the the processes and check which programs are taking
most memory( and end them i they are unecessary$Unknown0 1ou can also
end programs which are not responding or not working properly0
iference between -rewire 233$433
5irewire 433 has aster data transer speed 6433mbps7 than -rewire 233
6233mbps7
Their adapters are diferent
iference between US) 803 and US) 903
US) 903 has a much transer data transer rate 6243 Mbps7 :hile US) 808
only has 89mbps
Thats about 23 times ast
Ma'imum wire length o US) 803 is ; meters while US) 903 is < meters
US) 903 devices need to connect as a 803 device and negotiate or a 903
connection
:ays to imporve computer speed/
7/25/2019 TEJ3M Notes
3/5
Ad#ust visual efects/ "ptimi=e perormance by changing how windows and
menues appear
Reduce items that run on startup/Startup programs re>uire considerable
amount o memory
Remove programs no longer in use/ Theyre uselessly taking up space
,lean your browser cache( browsing history thumbnails etc
Scan and remove or Malware
Scan and remove or viruses
Add more RAM
derag your drive
Things to know beore buying a computer/
More cores more Speed
More RAM more speed
&raphic designers like user riendly creative and easy to use ,omputer and
"S%s like Apple and MA, "S and in the meantime re>uire high graphic
capabilities
while gamers re>uire more common "S%s like windows because its easy to
troubleshoot(large hard disk spaces and very high graphic capabilities
?eep on a budget( choose the best Processor and Motherboard or your
re>uirement and choose a RAM that suits that0Also choose the best &raphics
cards(@ard disk capacities( cooling systems and Audio cards$e>uipment as
per your re>uirement0! an important thing goes over budget(try to reduce
some other stuf which is less important0
Troubleshooting methods/
Substitution/ troubleshooting by substituting a known good component or a
known bad component0 5irst investigate and analy=e the problem you have0
Then select a working replacmenet o the same thing(i the problem goesaway( then youve ound solution and repair the component on site$elsewhere
other whise do urther anaylysis0
uick solution/ involves the use o the astest solution to stop the problem
rom recurring in the near uture but doesnt end it0
,heck recent changes/ ! you -nd out a new problem in the system( think
7/25/2019 TEJ3M Notes
4/5
about the recent changes you made to it(try removing those changes and i
the problems goes away then it was because o that speci-c change
ivide and con>uer/ ! you donot know the e'act location o the problem(
Then check each component one at a time 6possibly by removing it7( this way
youll create less mess and itll be aster and easier to identiy the problem0
,onductor/ A material that allows current to pass through it ,opper
!nsulator/ A matrial that doesnt allow current to pass through it :ood
Semi condictor/ A material which conducts electricity under some conditions
but not others Silicon or &ermanium
Robotics/
5undamental components o robots/
)rain/ Part o the system that responds to stimulation(,ontrols the actions(
Responses to sensors
)ody$chasis/ The mehcanisms o AMR which allow to act and be acted uponB
the chasis to hold the robot together
Actuators/ A mechanical device or moving or controlling ie motors etc
Sensors/ Allows the robot to respond to environment
Power Supply/ The #uice to run the computers( motors and sensors
Cero turning radius/ The turning o a robot without ollowing a circular path is
called ==ero turning radius0?eeping the centre o mass at a -'ed position and
rotate so that it moves 843 degrees
Autonomous/ )eing able to move on its own accord completely without input
rom an outside source0
)lind motion/ The motion o robot without any instruction or sensor
input(blindly
Purpose/ Should have a useul or productive purpose and not o harming
anyone
+nvironment/ Should not be harmul to the environment like being made o
Precious Raw materials(releasing harmul waste during maintainence or
disposal or #ust harming someone during its unction0 Should be made o
technology easily availabale in the market so that parts( troubleshooting
guides and technicians are easily available0
7/25/2019 TEJ3M Notes
5/5
Topologies/ Point to point(star( ring( bus
"S! layers/ presentation /ata structures data representation data readibility
and ormat Protocol D,P A5P
Application/ closest to the user( provides service to applicants http tp
Session/ !nterhost communication(establishes manages termiantes sessions
manages dialouge between parties protocol D+T)!"S
,abling/ Twisted pair(+thernet( ,oa'ial( -ber optics
)ene-ts o a *AD/ Share peripherals( documents( internet(,entrali=ed
administration(reduced operating costs(good or businesses(centrali=ed
backups
)ene-ts o peer to peer/
5ailure to one peer doesnt afect unctioning
Do need or central administrator as every user is administrator(can control
shared resources
less building and maintainence cost0
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