Measuring RAM

•          Made up of individual bits which are 1’s or 0’s (5v or 0v)

•          8 bits = 1 byte

•          A byte represents a character, number or symbol

•          1024 bytes = a kilobyte

•          1024 kilobytes = a megabyte

•          1024 megabytes = a gigabyte

Measuring RAM

•          Made up of individual bits which are 1’s or 0’s (5v or 0v)

•          8 bits = 1 byte

•          A byte represents a character, number or symbol

•          1024 bytes = a kilobyte

•          1024 kilobytes = a megabyte

•          1024 megabytes = a gigabyte

•         

Development of RAM

•           8088 – 1Mb of RAM

•          286 – 4Mb of RAM

•          486 - 16Mb of RAM

•          Pentium - 32Mb of RAM

•          Pentium II - 64Mb of RAM

•          Pentium IV or Athlon – 128Mb to 4Gb RAM

•          Athlon 64 – potentially 172,000,000 Gb RAM!!!

RAM – Basic Points

•           

•          Temporary storage area for programs and data

•          Volatile

•          Very fast – in some cases thousands of times faster than a HDD

•          Accessing data from RAM

•          RAM is very sensitive to ESD – always store in anti-static bags!

Overview of Lecture

•          Introduction

•          Banking Memory

•          Types of RAM

•          RAM Modules

•          DRAM Types

•          Double/Quad Pumping

Questions