15178290
Description
Flashcards by Sienna Kirk-Carver, updated more than 1 year ago
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Created by Sienna Kirk-Carver
almost 4 years ago
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| Question | Answer |
| WHAT IS A COMPUTER SYSTEM? | A collection of hardware and software that work together. |
| WHAT DOES RAM STAND FOR AND WHAT DOES IT DO? | Random Access Memory. Used to store program instruction and data that are currently being used by the processor. |
| WHAT DOES ROM STAND FOR AND WHAT DOES IT DO? | Read Only Memory. retains data even when the power is switched off. |
| WHAT DOES THE MOTHERBOARD HOLD? | Holds both the Processor and RAM. |
| WHAT DOES THE PROCESSOR (CPU) HOLD? | The purpose of a processor is to process data by executing instructions. It coordinates other parts of a computer system. |
| WHAT DOES A HARD DISK DO? | stores data. |
| WHAT IS CLOCK SPEED AND WHAT IS IT MEASURED IN? | it represents the number of instructions the cpu can perform and it is measured in HZ. |
| WHAT DOES DUAL CORE AND QUAD CORE MEAN? | dual core - can perform two tasks quad core - can perform four tasks simultaneously. |
| WHAT IS CACHE MEMORY AND HOW DOES IT IMPROVE A CPU? | it is high speed memory in the cpu and it improves the operating speed by storing frequently used instructions. |
| WHY ARE OUTPUT DEVICES NEEDED? | to communicate the result of processed data. |
| WHY IS SECONDARY STORAGE NEEDED? | to store large amounts of data and programs that are not running on the cpu. |
| WHAT IS THE FETCH-EXECUTE SYSTEM? | fetches instructions from main memory. decodes the instruction. executes the instruction. |
| WHY ARE INPUT DEVICES NEEDED? | to send control signals to the computer. |
| WHAT FACTORS SHOULD YOU CONSIDER WHEN SELECTING A SECONDARY STORAGE DEVICE? | how much it costs, portability, durability, speed and how much storage it has. |
| NAME THE USE, ADVANTAGES AND DISADVANTAGES OF MAGNETIC STORAGE | use - in hard disks in computers. advantages - very reliable, high capacity, low cost. disadvantages - not portable, not very durable, has moving parts. |
| NAME THE USE, ADVANTAGES AND DISADVANTAGES OF OPTICAL STORAGE | use - transfers files, distributing software advantages - low cost, light weight, portable. disadvantages - limited capacity, bad durability can be easily scratched. |
| NAME THE USE, ADVANTAGES AND DISADVANTAGES OF SOLID STATE MEMORY | use - found in cameras and phones. advantages - no moving parts, durable, large capacity, high read/write speed. disadvantages - more expensive. |