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+ | <WRAP round fggray muchbigger box>HPC Fundamentals Course Notes wiki</ | ||
+ | ======Login Problems====== | ||
+ | Some people have reported problems logging into the wiki. There seems to be two sources of problems experienced: | ||
+ | |||
+ | * User cannot log in. | ||
+ | * User cannot log in using " | ||
+ | |||
+ | If you are confident you are using the correct username and password, and are using a version of Internet Explorer, it is suggested that you use a different browser, such as Firefox, Safari, or Chrome. | ||
+ | |||
+ | If the " | ||
+ | |||
+ | * Uncheck "Use Secure Login" | ||
+ | * Change your password to something that doesn' | ||
+ | |||
+ | ======Syntax====== | ||
+ | For those unfamiliar, here is a page on [[wiki: | ||
+ | |||
+ | ======Course Notes Wiki====== | ||
+ | This is a space for members of the HPC Fundamentals class to create a source of information reflective and assisting to the course. | ||
+ | |||
+ | Aside from assignments that may have you specifically perform operations here, you should contribute when you encounter any of the following: | ||
+ | |||
+ | * Some neat bit of information related to the class | ||
+ | * Some clarification or understanding you've had with respect to concepts in the class | ||
+ | * Organizational/ | ||
+ | * Questions you have that may deserve a more visual answer | ||
+ | |||
+ | ====Computer Hardware Basics==== | ||
+ | |||
+ | 1. Power Supply | ||
+ | * Receives power from the wall in AC form, then converts it to a more stable DC form which will not overload certain circuits. | ||
+ | * Sends power in various voltages to different parts of the computer through color-coated wires.{{ : | ||
+ | 2. Hard Drive | ||
+ | * This is where we save data that we do not want to be lost. It has wires called " | ||
+ | * It is usually solid and contains disks on which data is kept.{{ : | ||
+ | 3. RAM (Random Access Memory) | ||
+ | * Temporary data storage | ||
+ | * come in the forms of several smallish sticks. These hold a lot of data, but cannot store things when the power is removed from them.{{ : | ||
+ | 4. Heat Sinks | ||
+ | * Look similar to metal " | ||
+ | * These are Passively Cooling, there is also active cooling in the form of fans or water cooled systems.{{ : | ||
+ | 5. Motherboard | ||
+ | * Contains all the essential information on the computer | ||
+ | * If you connect the pins in the pwd thing you can bypass security like some kinda hacker.{{ : | ||
+ | |||
+ | ====How to Search/ | ||
+ | |||
+ | ***sudo apt-cache search " | ||
+ | |||
+ | ***sudo apt-get install " | ||
+ | |||
+ | ***sudo apt-get update** :: Update everything you've installed, but do not push the updates to the software yet. Also updates the apt-cache. | ||
+ | |||
+ | ***sudo apt-get upgrade** :: Push the update to all software on your system. | ||
+ | |||
+ | ***sudo apt-get remove --purge " | ||
+ | |||
+ | ***sudo dpkg -l** :: This will display any programs/ | ||
+ | |||
+ | =====Raspberry Pi / Electronics===== | ||
+ | |||
+ | A useful beginner' | ||
+ | |||
+ | * https:// | ||
+ | |||
+ | The Infrared LEDs we have (note the input voltage (1.5VDC) and amperage (50mA -> 0.05A)): | ||
+ | |||
+ | * https:// | ||
+ | =====DokuWiki wrap plugin===== | ||
+ | http:// |