Storing Data + Unit Of Measurement Of Data

 Assalamu Alaikum!

Welcome back!

Today, my topic is about storing data & unit of measurement of data.

But at first, check my other blogs (yes, I call them blogs, if you don't, IDC):

https://samaraislamsaarah.blogspot.com/2025/02/input-and-very-little-output-devices.html

https://samaraislamsaarah.blogspot.com/2024/12/failures-of-internet.html

https://samaraislamsaarah.blogspot.com/2024/11/the-internet.html

https://samaraislamsaarah.blogspot.com/2024/11/the-stages-of-making-program-different.html

https://samaraislamsaarah.blogspot.com/2024/11/ip-address-transmitting-data-packets.html

https://samaraislamsaarah.blogspot.com/2024/11/cellular-network-comparing-different.html

https://samaraislamsaarah.blogspot.com/2024/11/network-hardware.html

https://samaraislamsaarah.blogspot.com/2024/11/the-world-of-technology.html

(If they don't work, just copy paste them in the search bar)

So, let's start!

We all know what data is, right? Data is the information that is in our computer. This blog is going to be about how the data is stored in the computer.

To store the data, we have lots of storage devices. Storage devices is a kind of device that allows a computer to save data permanently. There are two types of these: internal & external.

🚨Internal storage devices: Storage devices found inside devices like computers are called internal storage devices. An example is a motherboard.

🚨 External storage devices: Storage devices found outside of devices like computers are called external storage devices. These are useful as a backup when internal storage devices are full. 

This can also be divided into 3 groups: magnetic, optical & solid state.

🚨 Magnetic storage device: These storage devices use magnets & metal discs to store data. Lots of metal discs are on top of each other & between each of them is a magnet, which has the data. They can be both internal or external.

🚨 Optical storage device: These use circular plastic discs to store data. They are compact disc (CD) & digital versatile disc (DVD). A laser is used to make burn marks on these & those marks help a computer to read the data & turn it into numbers a computer can understand They can be either internal or external.

🚨 Solid state storage device: These use circuits to store data. There are no moving part in this storage device. They work more faster than the other two. An example is memory sticks.

Now, to the main question: HOW is data stored?

Computers store data using binary. Binary is a number system made with 2 numbers: 0 & 1.

Computers store data in its memory. The memory is made up of lots of switches. If a switch is on, the binary value is 1 & if a switch is off, the binary value is 0.

The binary value stored in 1 switch is called a bit. Bit is the smallest unit of data storage. 

Now, let's go to the units of measurement of data.

We have already gone through that bit is the lowest unit. Lets go through all of the units.

From smallest to largest:

1 bit.

1 byte = 8 bits.

1 kilobyte = 1000 bytes

1 megabyte = 1000 kilobytes/1000000 bytes

Ok, so we all know the math of measurement, right? This one is just like that.

Like, you want to know how many kilobytes in 9 megabytes.

So:

1 megabyte = 1000 kilobytes

9 megabytes = 1000 x 9 = 9000 kilobytes.

That's how its done!

So, that's all for today! Hope this was useful in any way. If you have any queries or questions, feel free to comment and I will try my best to answer!

Assalamu Alaikum!