11.12.2013
Ask the Teacher - 11th December 2013
Question: To what extent is assembly language an efficient method for producing computer programs?
Answer: That depends on how you define efficiency. Producing a program in assembly language, if done well, could be more efficient than code written using a high level language. The issue is that the time to write the program would be far greater than using modern, high level languages. So from a time point of view it is less efficient.
Question: Can a laptop be used if the battery is not in?
Answer: Yes, but a laptop does need a source of power e.g. a power cable. If the battery is taken out but the power cable is plugged in the laptop will usually still work. Have a look at the laptops in electrical retailers, they usually take the batteries out and leave them plugged into a power source all day.
Question: How many pixels does any image consist of?
Answer: The number of pixels in an image is not a fixed parameter, it is relative to several different factors. There are a lot of things to consider for this answer e.g. how big the image is and the resolution of the image.
Question: What is a CPU?
Answer: The CPU stands for the Central Processing Unit, it is a microchip inside your computer that processes lists of instructions and data. Two typical components of a CPU are the arithmetic logic unit (ALU), which performs arithmetic and logical operations, and the control unit (CU), which extracts instructions from memory and decodes and executes them.
