4407425
Description
Flashcards by Hannah Styring, updated more than 1 year ago
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Created by Hannah Styring
over 8 years ago
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| Question | Answer |
| What does CPU stand for? | Central Processing Unit |
| If a CPU has a clock speed of 4GHz, how many instructions can be carried out per second? | 4 billion |
| If a CPU has a clock speed of 2.4MHz, how many instructions can be carried out per second? | 2.4 million |
| What does the term 'core' refer to? | The number of processors contained within the system. Eg - Quad Core = Four Processors |
| What is the purpose of cache memory and where is it located? | The cache memory temporarily stores instructions from the main memory. It sits between the CPU and the main memory. |
| What is the Fetch, Decode, Execute Cycle? | The processor gets an instruction from the main memory, woks out what the instruction means and then carries out the instruction. |
| HDD is an example of what type of storage? | Magnetic storage |
| CD stands for...? | Compact Disk |
| What is the smallest unit of storage, nibble, bit or byte? | Bit |
| RAM is a type of main memory. True or false? | True. |
| RAM is volatile. What does volatile mean? | When the power is switched off, the contents of the RAM are lost. |
| Give some examples of devices that contain flash memory - | Cell phones Digital Cameras Printers MP3 playes |
| Name 3 logic gates - | NOT gates AND gates OR gates |
| What do NOT gates do? | NOT takes one bit as an input and gives the opposite as an output. Eg - Input: 1, Output: 0 |
| If I input 1 to a NOT gate, what will the output be? | 0 |
| What does a NOT gate look like? | |
| What do AND gates do? | AND gates take two bits as inputs. If both inputs are 1, then the output is 1. Otherwise, the output is 0. |
| If I input a 1 and a 0 to an AND gate, what will the output be? | 0 |
| If I input a 0 and a 0 to an AND gate, what will the output be? | 0 |
| If I input a 1 and a 1 to an AND gate, what will the output be? | 1 |
| What does an AND gate look like? | |
| What do OR gates do? | OR gates take two bits as inputs. If both inputs are 0 then the output is 0. Otherwise, the output is 1. |
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