Ch.1 Introductory Concepts

Ch.1 Introductory Concepts - Logic Circuits Course Arab...

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Logic Circuits Course Arab International University Faculty of Informatics and Communication Engineering (FICE) Ch. 1 Introductory Concepts and Course Outline Dr. Marwan Zabibi
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2 1- Digital and Analog Quantities 2- Binary Digits, Logic Levels, and Digital Waveforms 3- Basic Logic Operations 4- Introduction to the System Concept 5- Fixed-Function Integrated Circuits Contents
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Figure 1–1 Graph of an analog quantity (temperature versus time). 1. Digital and Analog Quantities Analog Quantities
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Figure 1–2 Sampled-value representation (quantization) of the analog quantity in Figure 1–1. Each value represented by a dot can be digitized by representing it as a digital code that consists of a series of 1s and 0s. Discrete and digital Quantities
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Figure 1–3 A basic audio public address system. An Analog Electronic System
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Digital and Analog Quantities • Analog quantities have continuous values • Digital quantities have discrete sets of values Most natural quantities that we see are analog and vary continuously. Analog systems can generally handle higher power than digital systems. Digital systems can process, store, and transmit data more efficiently but can only assign discrete values to each point.
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Digital and Analog Quantities Analog quantities have continuous values Digital quantities have discrete sets of values
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Digital and Analog Quantities Types of electronic devices or instruments: • Analog • Digital • Combination analog and digital Is mobile device analog or digital or combination of them?
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Figure 1–4 Basic block diagram of a CD player. Only one channel is shown. Analog and Digital Systems Many systems use a mix of analog and digital electronics to take advantage of each technology. A typical CD player accepts digital data from the CD drive and converts it to an analog signal for amplification.
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2. Binary Digits, Logic Levels, and Digital Waveforms
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Decimal Numbers • The decimal number system has ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 • The decimal numbering system has a base of 10 with each position weighted by a factor of 10: 2. Binary Digits, Logic Levels, and Digital Waveforms
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Binary Numbers • The binary number system has two digits: 0 and 1 • The binary numbering system has a base of 2 with each position weighted by a factor of 2:
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Ch.1 Introductory Concepts - Logic Circuits Course Arab...

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