Class notes
1.2 Logical Operations
- Course
- Institution
- Book
Full notes for module 1.2 Logical Operations
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
More summaries for
-
1.1 Hardware and Communications
-
1.3 Data Transmission
-
1.4 Data Representation and Data Types
Seller
Followluca_pass
Content preview
AS ComputingUnit 1.2 Logical Operations
What is meant by a logic gate?
A logic gate is an electronic component that can be used to conduct electricity based on a
rule.
The outputs of the gate is the result of applying the rule to one or more sources.
We use them because without them there would be no computers
There are seven kinds of logic gate but we only need to know of four
Logic gates are the building blocks of electronics. Therefore the building blocks of computer
programming. In short they are incredibly important.
The different types of logic gate are:
1. AND
2. NOT
3. OR
4. NAND
5. NOR
6. XOR
7. XNOR
8. Etc.
We only need to know the ones highlighted in red (FOR AS). Computer CPUs contain billions of tiny
circuits that perform certain logical functions. These are called logic gates.
NOT Gate
This is the simplest logic gate. The output is simply the opposite of the input. This gate is usually
used in programming to signify negation. E.g. if x is != to y .
Truth Table
Input Output
0 1
1 0
Diagram
AND Gate
AND logic gates are used to signify two conditions being met.
Diagram
Truth Table
Input A Input B Output
0 0 0
Page |1 Luca Passariello AS Computing
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller luca_pass. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.19. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
57413 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now