Component: Computer
==================
Computers provide a couple of API callbacks. Note that these can only be called by the computer itself, or its direct neighbors (i.e. other computers that share a face with that computer). Also note that since robots cannot interact with external components they cannot start/stop/query computers, but computers can interact with robots sitting next to them.

Component name: `computer`.  
Callbacks:

- `start(): boolean`  
  Tries to start the computer. Returns `true` on success, `false` otherwise. Note that this will also return `false` if the computer was already running. If the computer is currently shutting down, this will cause the computer to reboot instead.
- `stop(): boolean`  
  Tries to stop the computer. Returns `true` on success, `false` otherwise. Also returns `false` if the computer is already stopped.
- `isRunning(): boolean`  
  Returns whether the computer is currently running.
- `beep([frequency:number[, duration:number]])`  
  Plays a tone, useful to alert users via audible feedback. Supports frequencies from 20 to 2000Hz, with a duration of up to 5 seconds.
- `getDeviceInfo(): table`  
  Returns a table of device information. Note that this is architecture-specific and some may not implement it at all.
- `crash(reason: string)`  
  Attempts to crash the computer for the specified reason.
- `getArchitecture(): string`  
  Returns the computer's current architecture.
- `isRobot(): boolean`  
  Returns whether or not the computer is, in fact, a robot.

Example use:
```lua
local component = require("component")
local c = component.computer -- get primary computer, e.g. self
print(c.isRunning()) -- definitely true if it's this computer
c.stop() -- basically like computer.shutdown() if it's this computer
```

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