The Digital Logic Level:Basic Logic Circuits



Basic Digital Logic Circuits
• We have seen how to implement truth tables
and other simple circuits using individual gates.
• Few circuits are built like this in the realworld
• Instead modules containg many gates are used
• We will briefly look consider:
– Integrated Circuits
– Combinational Circuits
– Arithmetic Circuits
– Clocks



Integrated Circuits
• Gates are manufactu ....etc

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BCA205(N2): DIGITAL CIRCUITS & LOGIC DESIGN
IC Families
 An integrated circuit, abbreviated IC, is a type of circuit in which all the components are integrated on a single semiconductor chip of very small size. Integrated circuits are separated into related groups or families e.g. TTL and CMOS.
 TTL
The term TTL stands for transistor-transistor logic which refers to the use of bipolar junction transistors in the circuit technology used to construct the gates at the chip level. TTL consists of a series of l ....etc

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A/D and D/A Conversion,analog to digital and digital to analog


Data Converter impacts the factor for the performance of the overall radio design
Requirements: very high sampling rates, high number of effective quantization bits, an operating bandwidth of several Ghz, a large spurious-free dynamic range, a reasonable price
DAC and ADC converters
Sampling and Quantization
Nyquist Zones
Aliasing
Bandpass filtering – uses image to translate bandpass signals to baseband
Errors occurs in Quantization
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Author: Dr. Javier Resano

Abstract

Here, students learn that the comparison of DNA sequences is important to a wide variety of applications in medicine and biology, including the analyses of ecosystem biodiversity, cancer mutations and the evolution of viruses. The students learn that specialized yet inexpensive digital hardware based on field programmable gate arrays can help speed the analysis of DNA sequences. They design and test a simple implementation of the Smith-Waterman algorithm that is broadly used for DNA sequence ....etc

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project for digital logic design . cheap and easy
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Abstract:

Digital audio broadcasting, DAB, is the most fundamental advancement in radio technology since that introduction of FM stereo radio. It gives listeners interference - free reception of CD quality sound, easy to use radios, and the potential for wider listening choice through many additional stations and services.

DAB is a reliable multi service digital broadcasting system for reception by mobile, portable and fixed receivers with a simple, non-directional antenna. It can be operated at any frequency from 30 MHz ....etc

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