The Computer
COMPUTER
A computer is an electronic system that uses instructions to store, retrieve, and process data by using hardware and software.
Types of Computer
There are three types of Computer
- Analogue Computer
- Digital Computer
- Hybrid Computer
Analogue Computer
Analogue computers are designed to process analogue data. Analogue data is continuous data that changes continuously and cannot have discrete values. We can say that analogue computers are used where we don't need exact values always such as speed, temperature, pressure and current.
Analogue computers directly accept the data from the measuring device without first converting it into numbers and codes. They measure the continuous changes in physical quantity and generally render output as a reading on a dial or scale. Speedometer and mercury thermometer are examples of analogue computers.
Digital Computer
A Digital computer can be considered as a digital system that performs various computational tasks.
The first electronic digital computer was developed in the late 1940s and was used primarily for numerical computations.
By convention, the digital computers use the binary number system, which has two digits: 0 and 1. A binary digit is called a bit.
A computer system is subdivided into two functional entities: Hardware and Software.
Hybrid Computer
Hybrid computers are well known for their ability to blend analog and digital features of computers. Advantages include the availability of both analog and digital computations within a single unit and an efficient processing speed. A hybrid computer is individually designed and integrated, taking into consideration the field of its application and processing requirements. A hybrid computer is constructed in such a way that its components make the device fast and accurate.
However, a hybrid system is not the same as a hybrid computer; it is the physical machinery that defines whether a computer unit is hybrid or not, and hybrid systems typically only use analog-to-digital converters.
Comments
Post a Comment