The goal of this chapter is to understand, understand how it works, everything when we press on the keyboard, view an image, play a music astaghfirullah not quite literally but some details to grasp how it all boils down to the same language
My cat walked on the keyboard, and since the control CTRL button is broken I am too lazy to undo it. Anyway let’s start with the keyboard, actually let’s start with the letter Z because I actually like it.
,---,---,---,---,---,---,---,---,---,---,---,---,---,-------,
| ~ | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | [ | ] | <- |
|-----,---,---,---,---,---,---,---,---,---,---,---,---,-----|
| ->| | " | , | . | P | Y | F | G | C | R | L | / | = | \ |
|-----'---'---'---'---'---'---'---'---'---'---'---'---'-----|
| Caps | A | O | E | U | I | D | H | T | N | S | - | Enter |
|------'---'---'---'---'---'---'---'---'---'---'---'--------|
| | ; | Q | J | K | X | B | M | W | V | Z | |
|--------'---'---'---'---'---'---'---'---'---'---'----------|
| ctrl | | alt | | alt | | ctrl |
'------' '-----'--------------------------'------' '------'When you press on any letter on the keyboard, it’s not that you have just pressed on something mechanical that is fixed and to never change, you actually just pressed on a physical representation for what the software most likely will interprett but not necisarrly.
The keyboard that you see upove is not very known to you, why is the
Q not at te top left and what is the Z doing at the opposite side that’s
because you are used the normal keyboard layout, the industrial standard
Qwerty which has gotten it’s name from the first 5 letters
you see on the keyboard.
let’s take it even deeper to understand what actually happens, but to do that we have to understand how it all actually works, from the very first action you take on the keyboard to the interpretation of it inside your computer.
Let’s start first by defining, what a signal, a signal refers to any form of information that varies over time or space. Signals can take many forms, ranging from audio waveforms and temperature readings to sensor measurements.
Signals can be either analog or digital. It only differs on how you measure it, if you come to think about it analog is usually called continuous and digital is often called discrete and it all actually differes on where measurements are recorded at successive points in time.
Continuous signals are those where you take the measurement and record them over a continous range. and that includes taking data Continuously as the data you’re collecting needs this to render with a usable quality.
Discrete signals are measured and recorded at specefic, distinct points. and this type of data is common in the digital world. and that’s actually for a good cause.