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Processor Tutorial
INTERNAL COMPONENTS OF A PROCESSOR
DIFF. ARCHITECTURES
CLOCK FREQUENCY
PROCESSOR PERFORMANCE MEASUREMENT
MODERN ARCHITECTURE IMPROVEMENTS
IMPORTANT TERMS
HOW INSTRUCTIONS ARE FORMED?
MEMORY
INTRODUCTION
ACCESS MODES of MEMORY
ACTIVE & PASSIVE MEMORY
PRIMARY MEMORY
SRAM
DRAM
ROM
FLASH MEMORY
CACHE MEMORY
MEMORY HIERARCHY
HIT RATIO with example
MAIN MEMORY DESIGN
INTRODUCTION
DESIGN PROBLEM-I
DESIGN PROBLEM-II
 

 

 

INTRODUCTION

A Computer system can be classified into following groups:

  1. Internal memory
  2. Primary memory
  3. Secondary memory

INTERNAL MEMORY refers to the registers of CPU which hold temporary results. These registers are very fast.

PRIMARY MEMORY is the storage area where all the programs are executed. The CPU can directly access only those items that are stored in primary memory. Primary memory is fast but slower than internal registers by factor of 10. In short period of time addresses generated by  CPU have the tendency to get clustered around small regions in main memory. This phenomenon is known as locality of reference. Hence these days a small but fast memory called cache memory is installed between CPU and primary memory.

SECONDARY MEMORY refers to storage medium like hard disks, CDs etc

 

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