Memory Unit is that the quantity of knowledge which will be hold on within the storage unit .
This storage capacity is Expressed in terms of Bit , 

Bits and Bytes

Bit is that the smallest storage unit within the PC. a small amount will store simply zero or one, that is named binary, and thus are often keep by physical devices or systems that has 2 separate states. For instance two positions, or states of AN control, the 2 states being ‘on ‘and ‘off‘. A small amount may be represented as true/ false, no/ affirmative etc. Notice that a small amount has solely 2 committals to writing choices, or two values. One bit is just too tiny to be used, and therefore computers use a bigger storage unit referred to as bytes.

Bytes- area unit manufactured from bits. eight bits area unit accustomed produce one computer memory unit. Notice that a computer memory unit has twenty eight committals to writing choices, 256 values. RAM, onerous drives and flash drives, area unit every type of storage's measured by Bytes. Byte as Shown Below. Just as
0 OR 1  - 1 BIT
8 BITS   - 1 BYTES

Well! we know the Uses and Functions of Memory , it is just like a human brain that is used to store up Data and instructions for future uses. Almost 100% of Data are Saved for daily activities  by User Interface Memories mainly used at Mobile Phones & Computer etc. have Highly recommended at present World. Lets Classify Memory, Mainly Memory are classified in Two category  "Primary Memory &  Secondary  Memory"
So, This  works according to their own Characteristic and each path has own purpose on work-field like Primary Memory are based upon  ROM , RAM , PROM , EPROM , EEPROM , Static RAM , Dynamic RAM etc. Whereas  Secondary Memory bases upon  Disk drive , CD ROM , Hard Disk , Floppy , Read Only , Read write etc. Look below for more Understanding .
The ADVANTAGE OF USING MEMORY/STORAGE
Stored-up of any kinds of file, data or Statement for user/us has become one of the common methods in our Daily Life. Today’s Technology has made the superlative technique where user can feel relax saving the Entire Work to repeat or for further Presentation. As we glance the storage devices, the capacity for storage is more advanced of what human brain can store-up. It’s highly accumulated by User in need or for Out-put interfacing.

  • Easy to store and Transport Data.
  • Capacities available for Backup.
  • Fearless of Data Lost.
  • Fast Storage.
  • Unlimited stores of Information.
  • Stability of high Data.
  • Uncountable/Countable Storage Unit.
  • Fairly store Data.
PRIMARY MEMORY 
These Memory directly accessed by the CPU, through the Processor caches and System ROM. Whereas Each time Machine Starts up for Function ,the Operating System must Load from HARD DRIVE (Secondary Memory) into RAM (Primary Memory). So, the Entire Control over Primary Memory works by the Secondary Memory and Operating System works depending upon Primary Memory, Therefore It works on Co-Operate system. It holds the Information or Data that is Currently being used by the Processing Unit .


* Known as Main Memory.
* Makes Suitable to Run Computer .
* Data can be Lose in Case of Power is Switch Off.
* Using Capacity is Upto 32 GB .

SECONDARY MEMORY

The Technology of Secondary Memory refers to the Storage Devices that stored the Data’s are not always directly accessible by Compute.  It is much slower than the Primary Memory, but typically offers for greater Storage Capacity. So, hard drive the Main Storage Plays, an important role for Programming of Operating System. These stores up the information Usually for Backup Purpose in Case system Power gets off.so, The Data can be remain stored Until User Deletes. For Example, a floppy disk drive and hard disk drive both are refer to be secondary Memory in computer as Shown in Diagram above.


* It is non-Volatile Storage Memory.
* System may run without Secondary memory.
* Large/Least file, Data Storage.
* Data is Permanently Stored Until Deleted.
* It has Large Capacity.

My computer hardware

In Windows, you'll read the quantity of memory put in in your laptop by right-clicking "My Computer" and choosing "Properties..." A window can open with the quantity of RAM displayed beneath the "Computer" section of the window. This window also can be viewed by gap the "System" instrument panel
The amount of memory, or RAM, put in in your laptop will considerably have an effect on its performance. As an example, having many programs open at identical time might cause your laptop to impede if all the memory is being employed. Having deficient memory may additionally stop you from having the ability to open applications that need a great deal of RAM. (This data is often listed within the program's system requirements). Therefore, it's useful to understand what quantity memory is put in in your laptop.
If you wish to ascertain what quantity memory your Windows laptop is exploitation, you'll open the Windows Task Manager by pressing Control-Alt-Delete or Control-Shift-Esc. you'll conjointly right-click the Taskbar and choose "Task Manager." Once the Task Manager is open, click the "Performance" tab to look at a lot of what proportion what quantity} physical memory is put in in your laptop and the way much is accessible.

Computer hardware and package

•             hardware includes the Physical options, that square measure each half that you simply will either see or bit, for example: monitor, case, keyboard, mouse, and printer.

•             The half that activates the physical elements cesium allied package. It includes the options that accountable for leading the work to the hardware.

 

Application package

An application package may be a malicious program designed to perform a gaggle of coordinated functions, tasks, or activities. samples of AN application embrace a word processing system, a programmed, AN accounting application, an online browser, a media player or a console game. Applications could also be connected with the PC and its system package or could also be revealed individually, and should be coded as proprietary or ASCII text file.

Operating System

Operating system is outlined as a system package that manages component and package resources and provides common services for pc programs. All application software computer programs need an software system to operate. Software system controls computer's hardware, run the computer's programs and organizes files.

CPU

Central process the instruction from memory to be decodes to all system programme.

Storing device

Any hardware which will hold info, briefly or for good. We have a tendency to distinguish 2 styles of storage: a primary device (RAM), and a external storage device (hard drive). External storage may be removable, internal, or storage device.

Examples of permanent PC storage:

1. Magnetic medium devices: disc drive, floppy disk etc.

2. Optical: Blu-ray disc, compact disc read-only memory disc etc.

3. Nonvolatile storage devices: memory card, memory stick, SSD

RAM

It stands for random access memory, it keeps the info and general purpose program that the computer is execution at the instant. RAM isn't permanent, its contain may be modified and it's erased once the PC is off.

Motherboard

It is the physical arrangement during a PC that contains the computer's basic electronic equipment and elements. It’s a socket for the mainframe, RAM and growth half (sound cards, graphic cards ETC) and additionally connects along the mainframe, memory, arduous drives, optical drives, video card and additional.