Computer Memory : It is an Internal storage area in the computer where data and information are stored. It is in the form of chips.
Chips : Chip is small piece made by semiconductor material (silicon) on which Integrated Circuit is embedded. It contains millions of small electronic components (usually transistors)
Type of Chips -
- DIP - Dual in-line packages.
- PGA - Pin-grid arrays.
- SIP - Single in-line Packages.
- SIMM: Single in-line memory.
Integrated Circuit (IC) :
It is a small electronic device that is made out of a semiconductor material. The first integrated circuit was developed in the 1950.
- SSI - small-scale integration.
- MSI Medium-scale integration.
- LSI - Large-scale integration.
- VLSI - Very large-scale integration.
- ULSI - Ultra large-scale integration.
PCB (Printed Circuit Board :
It is a thin plate where Chips and Electronic Components are placed.
RAM Memory :
Random Access Memory - RAM is a form of data storage. It is an an integrated circuit memory chip that allows computer to read and write data & information to be stored or accessed by CPU (central processing unit). It is volatile therefore, data stored in RAM remains only as long as computer is on. As soon as computer gets turned off, the stored data disappears.
SRAM Memory :
Static Random Access Memory. SRAM retains data in it's memory as long as power is being supplied that means it is volatile, therefore it loses data when the power is turned off. It doesn't need to be refreshed each time. Therefore it is more faster. It can give access times as low as 10 nanoseconds. Despite SRAM being faster, it's not as commonly used as DRAM because it's so much more expensive. SRAM is faster and more reliable than the more common DRAM.
DRAM Memory :
DRAM stands for Dynamic Random Access Memory. DRAM needs to be refreshed thousands of times per second, and it has access times of about 60 nanoseconds therefore it is less faster in comparison to SRAM. It is a type of memory used in most commonly.