Computer Architecture

Programmed I/O is one of the three techniques we use for I/O transfer. The other two methods for the same are interrupted I/O and (direct memory access) DMA. Programmed I/O is a technique or approach that we use to transfer data between the processor and the I/O module. If we talk of programmed I/O and interrupted I/O, it is the responsibility of the processor to control the … [Read more...] about Programmed I/O

Internal memory in the computer is the memory that is directly accessible by the processor without accessing the input-output channel of the computer. The internal memory is accessed by the processor over the system bus. In the section ahead we will discuss types of internal memories in computers and we will also look at the technique of error correction for internal memory … [Read more...] about Internal Memory in Computer Architecture

Bus structures in computer plays important role in connecting the internal components of the computer. The bus in the computer is the shared transmission medium. This means multiple components or devices use the same bus structure to transmit the information signals to each other. At a time, only one pair of devices can use this bus to communicate with each other … [Read more...] about Bus Structure in Computer Architecture

Parallelism in a uniprocessor means a system with a single processor performing two or more than two tasks simultaneously. Parallelism can be achieved by two means hardware and software. Parallelism increases efficiency and reduces the time of processing. In this section, we will discuss the structure of a uniprocessor system, and how parallelism can be promoted in the … [Read more...] about Parallelism in Uniprocessor

An interrupt in computer architecture is a signal that requests the processor to suspend its current execution and service the occurred interrupt. To service the interrupt the processor executes the corresponding interrupt service routine (ISR). After the execution of the interrupt service routine, the processor resumes the execution of the suspended program. Interrupts can be … [Read more...] about Interrupts in Computer Architecture