1. Presentation IV Parts of a Computer By Teacher Julio Cesar Peñaloza Castañeda

2. Output Devices: An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by a computer which converts the electronically generated information into human-readable form. Input Devices: an input device is a peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system such as a computer or other information appliance. Examples of input devices include keyboards, mice, scanners, digital cameras and joysticks. 4.1 Parts of a Computer

3. Motherboard: The motherboard of a computer system contains different elements as memory, processor, modem, slots for graphic card and LAN card. Hard Disk: Hard disk is used to store data permanently on computer. Modem: Modem is used to connecting to the Internet. Two types of modems are widely used. Speakers: The speakers are in charge of the audio of the computer. 4.1 Parts of a Computer

5. Mathematical Logic (Intro) Math is like a foreign language. It is used to describe the world around us. In order to understand math, Like any other language you must learn the vocabulary and how to express ideas with that vocabulary. Math logic is the structure that allows us to describe concepts in terms of math. We will start with very

6. Mathematical Logic (Intro 2) Basic ideas and build on them. Starting in this way, we will be able to build an understanding of math in Manageable steps. With this foundation even more complicated problems won’t be so difficult.

7. Propositions A proposition is a declaration that can be either true or false, but not both. For example, “Today is Friday” is a proposition. This statement can be true or false, but not both. It is common to define a shorthand notation for propositions: Let P be the proposition “Today is Friday.” If the statement is true, then P’s value is true. If it is false, then P’s value is false.

8. Connectors They represent logical operations and there are five: Negation (¬) Conjunction (^) Disjunction ( ∨ ) Implication (→) Double implication (↔)