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LO1, this is when you write down the binary number and from the left add…
LO1
number conversions
1.9
decimal to binery
decimal to hexadecimal
binary to hexadecimal
binary to decimal
hexadecimal to decimal
hexadecimal to binary
Types of computer systems 1.3
Destop systems/servers
tablet/hybrid
smartphones
embedded system / internet of things
computer hardware 1.1
Input devices*
output devices
communication device
benefits
communication hardware 1.5
network hub
switch
router
computer components 1.2
ram
processor
motherboard
connectivity 1.4
copper
fibre
wireless
number systems
decimal
binary
hexadecimal
hardware trouble shooting
identifying hardware faults
troubleshooting tools
units of measurement
1.7
types of measurement
size comparisons
this is when you write down the binary number and from the left add the binary numbers (e.g 128,64) until you get the decimal
this is when you add all the binary numbers that have one on to get the decimal number
starting from the right divide the table divide it into to two tables going up to four, then fill in the binary number and add the table back together
covert any letters to their number form then times by 16 and for the second number x1, add them together and covert the number to a binary number
times the first number by 16, then times the second by 1 and you get the decimal number
divide the number by 16, and the whole number is your first number e.g 14 would be E and then times the decimal by 16 to get the second
this is any hardware device that converts, computer data to a human readable form, e.g binary to a picture for example a monitor
this a hardware device that is able to transmit an analog over the phone for example
benefits of having an communication device is that you don't have to be near the person to talk to them, just have the device
this is a device that is able to enter information into a computer for processing, for example a keyboard
this is when you investigate a piece of hardware e.g a graphics card to see if it is running smoothly, and put it through test to test how powerful it is, compared to a non-faulty one
some trouble shooting tools could be a internet speed test, ip config, ns lookup. These are tools that would help to identify a problem with a piece of hardware
A router is a device that communicates between the internet and the devices in your home that connect to the internet. As its name implies, it “routes” traffic between the devices and the internet.
A hub is a physical layer networking device which is used to connect multiple devices in a network. They are generally used to connect computers in a LAN. A hub has many ports in it.
A switch is a device in a computer network that connects other devices together. Multiple data cables are plugged into a switch to enable communication between different networked devices. ... Switches may also operate at higher layers of the OSI model, including the network layer and above.
A Windows tablet that is also a laptop computer. The tablet is attached to a keyboard that can be easily removed.
a mobile phone that performs many of the functions of a computer, typically having a touchscreen interface, Internet access, and an operating system capable of running downloaded apps
A server is a computer that provides data to other computers. It may serve data to systems on a local area network (LAN) or a wide area network (WAN) over the Internet. Many types of servers exist, including web servers, mail servers, and file servers. Each type runs software specific to the purpose of the server
An IoT device is a piece of hardware with a sensor that transmits data from one place to another over the Internet. Types of IoT devices include wireless sensors, software, actuators, and computer devices. They can be imbedded into mobile devices, industrial equipment, environmental sensors, medical devices, and more.
when you don't have to use a wire physically be connected in order to still recieve an output
this is a special material made of glass, it has uni-directional data flow and needs at least two fibres to be place in cable. It also has very good transmission speeds
terabyte / gigabyte / megabyte / kilobyte / byte / nibble / bit, these are all the types of measurement
this is the biggest to the smallest terabyte / gigabyte / megabyte / kilobyte / byte / nibble / bit
used to connect a tv to a ariel, good at carrying radio signal and not used for data transmission as fibre does a better job
this has a base 10, so numbers go up to 10 then it starts the alphabet going to 15 e.g 1,2,3,4,5,6,7,8,9,a,b,c,d,f,e
hexadecimal has a base of 16 and goes has 16 and 1, you times the base with the number if trying to get your hexadecimal and then add together
this is a base 2 as it only uses 1's and 0's, this is inputted into a table that is doubled from one and goes up to 128
ram is a computer part that dedicates itself to store data temporarily
this enables the pc to interact with applications and programmes, they can be very expensive
this is the center of the pc and brings every computer computer components together that allow them to interact
