Nobody downloaded yet

Combinational Logics - Lab Report Example

Comments (0) Cite this document
There are several families of logic ICs numbered from 74xx00 onwards with letters (xx) in the middle of the number to indicate the type of circuitry, e.g. 74LS00 and 74HC00. The original family (now obsolete) had no letters, e.g. 7400
74LS family: The 74LS (Low-power Schottky) family (like the original) uses TTL (Transistor-Transistor Logic) circuitry which is fast but requires more power than later families…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER95.3% of users find it useful
Combinational Logics
Read TextPreview

Extract of sample
"Combinational Logics"

Download file to see previous pages Note that 74HC inputs cannot be reliably driven by 74LS outputs because the voltage ranges used for logic 0 are not quite compatible, use 74HCT instead.
74HCT family: The 74HCT family is a special version of 74HC with 74LS TTL-compatible inputs so 74HCT can be safely mixed with 74LS in the same system. In fact 74HCT can be used as low-power direct replacements for the older 74LS ICs in most circuits. The minor disadvantage of 74HCT is a lower immunity to noise, but this is unlikely to be a problem in most situations.
Outputs can sink and source about 4mA if you wish to maintain the correct output voltage to drive logic inputs, but if there is no need to drive any inputs the maximum current is about 20mA. To switch larger currents you can connectatransistor.
Supply: 5V 0.25V, it must be very smooth, a regulated supply is best. In addition to the normal supply smoothing, a 0.1F capacitor should be connected across the supply near the IC to remove the 'spikes' generated as it switches state, one capacitor is needed for every 4 ICs.
Inputs 'float' high to logic 1 if unconnected, but do not rely on this in a permanent (soldered) circuit because the inputs may pick up electrical noise. 1mA must be drawn out to hold inputs at logic 0. In a permanent circuit it is wise to connect any unused inputs to +Vs to ensure good immunity to noise.
Outputs can sink up to 16mA (enough to light an LED), but they can source only about 2mA. To switch larger currents you can connectatransistor.
Fan-out: one output can drive up to 10 74LS inputs, but many more 74HCT inputs.
Gate propagation time: about 10ns for a signal to travel through a gate.
Frequency: up to about 35MHz (under the right conditions).
Power consumption (of the IC itself) is a few mW
Open Collector Outputs:
Some 74 series ICs have open ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
(“Combinational Logics Lab Report Example | Topics and Well Written Essays - 1500 words”, n.d.)
Combinational Logics Lab Report Example | Topics and Well Written Essays - 1500 words. Retrieved from
(Combinational Logics Lab Report Example | Topics and Well Written Essays - 1500 Words)
Combinational Logics Lab Report Example | Topics and Well Written Essays - 1500 Words.
“Combinational Logics Lab Report Example | Topics and Well Written Essays - 1500 Words”, n.d.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document
Discuss the logics, illogics, meanings, function, or non functions of war from an anthropological viewpoint
... The Logics, Illogics, Meanings, Function, or Non-Functions of War from an Anthropological Viewpoint INTRODUCTION War is a prolonged disagreement carried among nations, parties, or states characterized by societal disruption, extreme aggression, and increased mortality. As a pattern of behavior, warlike trends are found in primates including humans. Such a clash is always an attempt to either change the material hierarchy of power or psychological equality between such kinds of groups. Logics, illogics and meaning of war The general idea of the human warfare from anthropological point of view is largely focuses on small societies such as Yanomani, Masai, Dani and Nazis. The matters of anthropological discussion are the individual... The...
2 Pages(500 words)Essay
Philosophy - Logics
...more into the numbers of assets in fees, in cash and in terms of the share banking structures have got. Statistics may not be reliable, but Rohde (2011) that according to Libyan Investment Authority, huge investments ($1.7 billion) “generated returns far below the industry benchmark” (p. 1). It is remarkable place highlighting doubts on the part of the author. Hence, an inductive way of reasoning is, perhaps, the most apparent in the article. Second, the author is driven by the causal reasoning in terms of the time perspective and relying on causative-consecutive approach insofar. Thereupon, the main logic is that Qaddafi military regime was highly criticized by the United States, but the financial relationships in the...
6 Pages(1500 words)Essay
Logics - Analysis of an Article by Peter Kreeft
...? Logics - Analysis of a chosen article: The Apple Argument Against Abortion by Peter Kreeft The Apple Argument Against Abortion The article, “The Apple Argument Against Abortion” was published on catholic education resource center website in 2000. It was written by Peter Kreeft Ph. D who was a professor of philosophy at Boston College at the time of writing this article. He was a student in Calvin College (AB 1959) and Fordham University (MA 1961, Ph.D., 1965). He has started his teaching career from Villanova University from 1962-1965 and later joined Boston College as a professor. Apart from many articles, he has written many books such as The Snakebite Letters, The Philosophy of Jesus, The Journey: A Spiritual Roadmap...
6 Pages(1500 words)Essay
Logics and Supply Chain Management
...?Topic: LOGISTICS AND SUPPLY CHAIN MANAGEMENT Euro Cast company is among the many multinational companies thatmanufacture metal components (Mangan, 2012, p. 44). The company also manufactures plastic moulds. Euro Cast has a large supply structure and serves automobile industries, companies dealing in telecommunications, computer manufacturers as well as power firms (Bowersox, Cooper & Closs, 2007, p. 356). The company is well structured and has over one hundred manufacturing plants across the world. In fact, the company targets developing nations with potential and ventures to exploit its resources (Jonsson, 2008, p. 145). Euro Cast has an aim of propelling industrialization across the world to higher levels while it increases... LOGISTICS...
8 Pages(2000 words)Essay
Colonial assumptions/logics still continue to underpin today's global politics--an assessment as to the fairness of this stateme
...imperialism. The European colonialism hindered the sense of civilization superiority and the logic of domination as it promoted exploitation. Fashioning a sustainable state has become a challenge as most of the post-colonial especially in Africa is collapsing thus exacting high cost to human in the absence of a state with the presence of a globalized world states (Chowdhry and Nair, 2002, p.52). This is a result of the challenges of the colonial legacy impacted on the post-colonial states in respect to political identity. The forces of linguistic, feminism , geopolitical, history, architecture, post-colonial literature, sociology, Marxist theory, religion, political science and anthropology helps in defining the concept...
13 Pages(3250 words)Essay
Combinational and sequential logics
...? Combinational and Sequential Logics Task Learning Outcome 1 Interpret manufacturer’s data to select appropriate combinational logic devices for specific purposes There are various logic gates that are used in designing and building of a two binary digits full adder. The logic gates for designing and building of a full adder includes three Ex-OR gates, one OR gate, and two AND gates. The logic gates add up to six. The Ex-OR gate produces “1” at the output when either of the input is at logic 1. AND gate is used when both inputs are at logic 1. The adder truth table comprises of the additional column that caters for the summed output, carry output, and carry-in input (Ross & Sheldon 75). The two binary digit full adders are found... as the...
5 Pages(1250 words)Assignment
Logics in Computer Science
...Logics in Computer Science Question Backward Chaining Method Final target is Peter X 2. Mary Y 3. Frank Z Where X, Y and Z are the variables for the medicine administered. Step 1: X, Y and Z should suppress pain and / or Diarrhoea. Aspirin / alcohol and lomotil need to be administered to all the three. Step 2: X cannot aggravate peptic ulcer. This rules out aspirin. Therefore, Peter is administered alcohol for pain and lomotil for Diarrhoea. Y cannot impair lever-function. This rules out lomotil. Therefore, Mary is administered either aspirin or alcohol. Z cannot aggravate eczema. None of the medicines under consideration do that. Therefore, Frank can be administered any of the two pain killers and lomotil. 1....
4 Pages(1000 words)Essay
...Logic- Gay? Whatever, Dude. Introduction The article that has been critically reviewed in this paper is “Gay? Whatever, dude” by Charles M. Brow. Brow’s article appeared in the New York Times on the 4th of June 2010. The article can be viewed at: In this article, Brow talks about how common the notion of gay relationships and gay marriages have become in the US today. He talks about the shockingly high rates of acceptance of gays and lesbians in the US. Brow states that nearly fifty percent of Americans have now accepted the notion of gay and lesbian relationships. He also tells that this notion is more common in men as compared to...
6 Pages(1500 words)Term Paper
Mathematical Logics
...Introduction Mathematical logics can be defined as the application mathematical formulas and techniques to solve logical problems. In the modern times, mathematical logic includes model theory, set theory, re-cursion theory and proof theory (Lavrov and Maksimova 170). Modal logics may have been used since time immemorial, especially by philosophers. In the modern times I believe that the most important Change in mathematical logic has been the development of many other kinds of logics which have supplemented the standard or classical one used in Mathematics. Mathematical logics help to bring formality in facts. It does not only promote proper reasoning but it also enhances a proper use of common sense (Lavrov and Maksimova 170... ...
2 Pages(500 words)Essay
Applied Electronics Assignment. Coursework
...LAB REPORT Location: Lab report Introduction Arduino is the company for the software, project and the community based firm that handles the design and production of kits for producing built digital equipment and the things which sense and directs the controllability of every part of the world through interaction with things. The report is based on the design of the combinational circuit that is connected to seven segments LED using the logic gate. Arduino is based on the C++ programming languages. The report is mainly about outlining the work done in the laboratory, difficulties encountered during lab work and the suggested solutions. This lab report was based on the application of Arduino that is the...
3 Pages(750 words)Lab Report
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Let us find you another Lab Report on topic Combinational Logics for FREE!
logo footer
Contact us:
Contact Us Now
FREE Mobile Apps:
  • StudentShare App Store
  • StudentShare Google play
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • Miscellaneous
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us