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notes:hpc0 [2019/01/24 19:58] – [Computer Hardware Basics] relliot9 | notes:hpc0 [2019/03/27 10:07] – [How to Search/Install/Uninstall in Debian] wedge | ||
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====Computer Hardware Basics==== | ====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. | * 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.{{ : | * 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 " | * 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. | + | * It is usually solid and contains disks on which data is kept.{{ : |
- | 3. RAM (Random Access Memory) | + | 3. RAM (Random Access Memory) |
* Temporary data storage | * 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. | + | * 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 | + | 4. Heat Sinks |
* Look similar to metal " | * Look similar to metal " | ||
- | * These are Passively Cooling, there is also active cooling in the form of fans or water cooled systems. | + | * These are Passively Cooling, there is also active cooling in the form of fans or water cooled systems.{{ : |
- | 5. Motherboard | + | 5. Motherboard |
* Contains all the essential information on the computer | * 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. | + | * 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===== | =====DokuWiki wrap plugin===== | ||
http:// | http:// |