Introduction

assembly language is used to directly talk to the computer.
In terms of higher programming languages like cpp or python, the compiler and interpretor acts as a bridge between the programmer and the computer.

Basic Computer Architecture

A computer consists of processor, memory and I/O devices.
There should be mechanisms to: - Specify that data needs to be read. - Specifies the precise location of the memory. - Transfer of data from memory to processor.

There are group of bits collectively called buses.
There are 3 types: 1. Address bus: These bits are used to specify the memory location to be read or written to. These are uni-directional. 2. Data bus: These bits carry the data between processor and memory. These are bi-directional 3. Control bus: These bits carry control operations such as specifying if the data is to be read or written.

The number of bits in a cell is called cell-width.
The width of data-bus has to be equal to the cell-width.

The control-bus has to synchronize the processor and the memory to establish the connection between them.

Registers

These are temporary storage inside the processor to hold data such as operands on which the operations are performed.
These are named depending on the architecture, according to a nomenclature (rules of naming things).