8/21/2014 Computer RAM
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Computer - RAM
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A RAM constitutes the internal memory of the CPU for storing data, program and program re
read/write memory. It is called random access memory (RAM).
Since access time in RAM is independent of the address to the word that is, each storage
Computer Fundamentals inside the memory is as easy to reach as other location & takes the same amount of time.
reach into the memory at random & extremely fast but can also be quite expensive.
Computer Home
RAM is volatile, i.e., data stored in it is lost when we switch off the computer or if there is
Computer - Overview failure. Hence, a backup uninterruptible power system (UPS) is often used with computers
small, both in terms of its physical size and in the amount of data it can hold.
Computer - Applications
RAM is of two types:
Computer - Generations
Static RAM (SRAM)
Computer - Types
Dynamic RAM (DRAM)
Computer - Components
Computer - CPU
Computer - Input Devices
Computer - Output Devices
Computer - Memory
Computer - RAM
Computer - ROM
Computer - Motherboard
Computer - Memory Units
Computer - Ports
Computer - Hardware
Computer - Software
Static RAM (SRAM)
Computer - Number System
The word static indicates that the memory retains its contents as long as power remains
Computer - Number Conversion However, data is lost when the power gets down due to volatile nature. SRAM chips use a ma
transistors and no capacitors. Transistors do not require power to prevent leakage, so SRAM
Computer - Data have to be refreshed on a regular basis.
Computer - Networking Because of the extra space in the matrix, SRAM uses more chips than DRAM for the same a
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8/21/2014 Computer RAM
Computer - Operating System storage space, thus making the manufacturing costs higher.
Computer - Internet & Intranet Static RAM is used as cache memory needs to be very fast and small.
Computer - How to Buy? Characteristics of the Static RAM:
Computer - Available Courses It has long data lifetime
There is no need to refresh
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Faster
Computer - Quick Guide
Used as cache memory
Computer - Useful Resources
Large size
Selected Reading Expensive
Developer's Best Practices High power consumption
Effective Resume Writing
Dynamic RAM (DRAM)
Effective Resume Writing
DRAM, unlike SRAM, must be continually refreshed in order for it to maintain the data. This is
Computer Glossary
placing the memory on a refresh circuit that rewrites the data several hundred times per secon
Who is Who is used for most system memory because it is cheap and small. All DRAMs are made up of
cells. These cells are composed of one capacitor and one transistor.
Characteristics of the Dynamic RAM:
It has short data lifetime
Need to refresh continuously
Slower as compared to SRAM
Used as RAM
Lesser in size
Less expensive
Less power consumption
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