MEMORY OF COMPUTER SYSTEM ANDUNITS OF MEMORY

MEMORY OF COMPUTER SYSTEM ANDUNITS OF MEMORY

• 1.
  MEMORY OF COMPUTER SYSTEM AND UNITSOF MEMORY
• 2.
  Computer memory isthe storage space in the computer, where data is processed and instructions required for processing are stored.CPU is the brain of the computer. CPU needs to have some palce where it can hold instructions and data during processing. There are 2 types of memories – 1. Primary Memory (Main Memory) 2. Secondary Memory
• 3.
  RAM (Random Access Memory) ROM(Read Only Memory)
• 5.
  PEN DRIVE DVD BLU RAY DISK HARD DISK
• 6.
  These are magneticand optical memories. It is known as the backup memory. It is a non-volatile memory. Data is permanently stored even if power is switched off. It is used for storage of data in a computer. Computer may run without the secondary memory. Slower than primary memories.
• 7.
  • Memory unitis the amount of data that can be stored in the storage unit. • Computer stores and processes data in the form of binary numbers. • A binary number is either 0 or 1 and is known as bit (binary digit)
• 8.
  UNIT SHORT FORMFULL NAME 1 bit Bit Binary Digit 8 bits 1 Bytes Byte 1024 bytes 1 KB Kilo Byte 1024 KB 1 MB Mega Byte 1024 MB 1 GB Giga Byte 1024 GB 1 TB Terra Byte 1024 TB 1 PB Peta Byte 1024 PB 1 EB Exa Byte