1. Why is it important for computers to use a standard code (ASCII) to represent text? (1) 2. Resolution can be used to describe the quality of several computer devices. Name three. (3) 3. A computer monitor has a reolution of 72 dpi. How much memory is required for a 2 inch x 3 inch black and white image on this screen? (3) 4. A printer has a resolution of 600 dpi. How much memory is required for a printout of a 4 inch by 8 inch, 256 colour picture? (3) 5. Which part of the CPU is responsible for binary arithmetic? (1) 6. Hexadecimal is an alternative number system used for displaying error messages in Windows e.g. 6AAF317D3 etc. Why is this number system used in preference to binary? (1) Total = (12) |
