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rec1 - CS177Recitation Week1IntrotoJava Questions Computers...

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CS 177 Recitation Week 1 – Intro to Java
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Questions?
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Computers Computers can do really complex stuff. How? By  manipulating data according to lists of instructions. Fundamentally, this is all that a computer can actually do. Different kinds of computers: supercomputers,  desktops, laptops, embedded. Different kinds of computer have different sizes,  computing powers, uses, etc.
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Computers What is  hardware ? What are some examples? What is  software ? What are some examples? The physical components of the computer (stuff you can  touch). monitor, CPU, keyboard, memory, hard drive, etc. Programs that run on the hardware and make it do stuff. Windows, Firefox, MS Powerpoint, World of Warcraft, etc
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Computers What are some important (hardware) parts of a  computer? CPU – does calculations (the brain) Memory – stores data (cache, RAM, hard drive, etc) I/O devices – allows the user and the computer to  communicate (monitor, mouse, keyboard, etc)
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Programming Computers only manipulate data according to a list  of instructions.  Computers are stupid, but really fast.  Computers can only do very simple things (like adding  two numbers), but they can do millions or billions of  simple things a second. Programming – the process of creating lists of  instructions for the computer to follow. 
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Programming The process of software development: 1) Understand the problem that you need to solve. 2) Plan a solution to the problem.
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