Question

Computer Architecture

1.How does the CPU typically interface with the world outside of it?

2.Most modern computer displays use the RGB (Red Green Blue) system where 8 bits are allocated to each individual component, R, G, and B. How many different colors are available in this system?

3.Given a computer display that use the RGB (Red Green Blue) system where 10 bits are allocated to each individual component, R, G, and B. How many different shades of gray are available in this system?

Answer 1

1.CPU interfaces with the world outside of it with the help of input/output processor.An IOP is a processor with memory access capability which divides the system into a memory unit and number of processors.The function of an IOP is to manage input and output tasks.

Block Diagram of I/O Processor.

From the above diagram its clear that memory unit occupies the central position and handles the communication.CPU processes the data needed for computational tasks and the IOP provides path for transferring data between peripherals and memory.

2.RGB is the system representation of colors.The total number of colors is 256x256x256 which is 16,777,216 colors if 8 bits are allocated to each level.

3.If 10 bits are allocated to each level the total number of shades willl be 1024x1024x1024 which is 1,073,741,824.