Handling information digitally offers several advantages. Some of the merits of a digital system are spelled out. Details of some these aspects will be discussed and studied in the Digital Logic Design course. Other aspects will be covered in several other courses.
• Storing and processing data in the digital domain is more efficient: Computers are very efficient in processing massive amounts of information and data. Computers process information that is represented digitally in the form of Binary Numbers. A Digital CD stores large number of video and audio clips. Sam number of audio and video clips if stored in analogue form will require a number of video and audio cassettes.
• Transmission of data in the digital form is more efficient and reliable: Modern information transmission techniques are relying more on digital transmission due to its reliability as it is less prone to errors. Even if errors occur during the transmission methods exist which allow for quick detection and correction of errors.
• Detecting and Correcting errors in digital data is easier: Coding Theory is an area which deals with implementing digital codes that allow for detection and correction of multi-bit errors. In the Digital Logic Design course a simple method to detect single bit errors using the Parity bit will be considered.
• Data can be easily and precisely reproduced: The picture quality and the sound quality of digital videos are far more superior to those of analogue videos. The reason being that the digital video stored as digital numbers can be exactly reproduced where as analogue video is stored as a continuous signal can not be reproduced with exact precision.
• Digital systems are easy to design and implement: Digital Systems are based on two-state Binary Number System. Consequently the Digital Circuitry is based on the two-voltage states, performing very simple operations. Complex Microprocessors are implemented using simple digital circuits. Several simple Digital Systems will be discussed in the Digital Logic course.
• Digital circuits occupy small space: Digital circuits are based on two logical states. Electronic circuitry that implements the two states is very simple. Due to the simplicity of the circuitry it can be easily implemented in a very small area. The PC motherboard having an area of approximately 1 sq.ft has most of the circuitry of a powerful computer. A memory chip small enough to be held in the palm of a hand is able to store an entire collection of books.
• Storing and processing data in the digital domain is more efficient: Computers are very efficient in processing massive amounts of information and data. Computers process information that is represented digitally in the form of Binary Numbers. A Digital CD stores large number of video and audio clips. Sam number of audio and video clips if stored in analogue form will require a number of video and audio cassettes.
• Transmission of data in the digital form is more efficient and reliable: Modern information transmission techniques are relying more on digital transmission due to its reliability as it is less prone to errors. Even if errors occur during the transmission methods exist which allow for quick detection and correction of errors.
• Detecting and Correcting errors in digital data is easier: Coding Theory is an area which deals with implementing digital codes that allow for detection and correction of multi-bit errors. In the Digital Logic Design course a simple method to detect single bit errors using the Parity bit will be considered.
• Data can be easily and precisely reproduced: The picture quality and the sound quality of digital videos are far more superior to those of analogue videos. The reason being that the digital video stored as digital numbers can be exactly reproduced where as analogue video is stored as a continuous signal can not be reproduced with exact precision.
• Digital systems are easy to design and implement: Digital Systems are based on two-state Binary Number System. Consequently the Digital Circuitry is based on the two-voltage states, performing very simple operations. Complex Microprocessors are implemented using simple digital circuits. Several simple Digital Systems will be discussed in the Digital Logic course.
• Digital circuits occupy small space: Digital circuits are based on two logical states. Electronic circuitry that implements the two states is very simple. Due to the simplicity of the circuitry it can be easily implemented in a very small area. The PC motherboard having an area of approximately 1 sq.ft has most of the circuitry of a powerful computer. A memory chip small enough to be held in the palm of a hand is able to store an entire collection of books.
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