- Units of storage: bit, byte, Kilobyte, Megabyte, Gigabyte, Terabyte, Petabyte
- Translation of high-level program code to binary (machine code): interpreters and compilers
- Use of binary to represent and store:
- Integers
- Real numbers (mantissa & exponent)
- Characters
- Instructions (machine code)
- Graphics (bit-mapped and vector)
- Basic computer architecture:
- Processor( registers, ALU, control unit)
- Memory
- Buses (data and address)
- Interfaces
Category: Computer Systems
S4 – Homework w/b 24th Nov
Hardware
1 State what RAM stands for. 1
2 Name the part of the processor which stores data temporarily, eg instructions before they are executed? 1
3 Which bus holds the number of the storage location the processor needs to locate data in RAM? 1
4 Name the other 2 parts of the processor not mentioned in Q2. 2
5 Draw the simple block diagram of the computer system. 3
8 marks
S4 – This weeks starter question
Homework for 3rd Nov 2014
- What is the number system used by computers? (1)
- State two advantages of using binary numbers rather than decimal numbers in a computer system. (2)
- The reserve price of a vase is £42·50. State how a real number such as 42·50 would be represented in the computer. (1)
- A program calculates the average rainfall for one week as 18.6mm. Describe how floating point representation is used to represent real numbers. (2)
- Convert the decimal number 13 into a binary number. (1)
- Convert the following binary numbers in to decimal (2)
- 00001011
- 10011111
- Convert the following decimal numbers into binary (2)
- 63
- 193
- Convert the binary number 11011 into a decimal number. (1)
- State one reason why computer systems use binary numbers rather than decimal numbers. (1)
- Convert the decimal number 27 into an 8 bit binary number. (2)
Total 15