Computer Logic !!! :D

Good morning everyone !!!! :D
Today I`m going to talk to you about..........
                                               Computer Logic

Let`s start of with something simple. Sooo the first thing of today it is the meaning of 2-state device or we can call it Bistable Device. The meaning is it is like a switch which can be only on and off.

 A clear example is a bulb. It can be only on or off so it is a Bistable Device. Illuminated or not Illuminated.

 

 

 

Computers are made up of also light switches but of course there are much more than 2. There is a wide range of devices. In computer we use transistors which has no mechanical or moving parts.

 

This can bring us to step nr 2 Binary. This is a number system which is a 2-state device.Only 1,0. A bit is a single digit from a binary number

 

 

 The number system we use everyday is called the decimal number system. Which are these 0,1,2,3,4,5,6,7,8,9

 

 

The more bits we have the more values we an represent. For example 3 bulbs can represent 000,001,010,011,100,101,110,111 and therefore 8 different values. So we can say it is 2 to the power of 3.

For 1 we say 2 to the power of 1 and so on..... An easy way is always 2 to the power of the bits we have, to find the values.

 

   That`s all for now not to make a very long post. If you want to know more wait for the next post which will be posted today or tomorrow or some days after. Feel free to post comments ;)

 

 Your friend,

         Chantelle xxx

 

Keyboard !!!

Heyyyyy Mee againn,
        Today it`s going to be about
                                    Special Purpose Keyboard

Three examples of these can be ~ Pressure Sensitve Keyboard
 

This can be expained better by this video that me and my friend Antonella found for you :

 

 

 

 

This is usually used in point-of-sale.

 

 

The next one is ~ Touch Sensitive keyboard 

 

 

Here is some information basic information : 

•  It’s a projected display, that can hook up to any Bluetooth enabled device, such as a PC, laptop, PDA etc.
• The QWERTY keyboard display is projected onto a non-reflective surface, and detects the exact location where you touch the keyboard, relaying the keystroke back to your computer.
• The keyboard is portable
• It will work in a standard-lit room, but I’m sure that it looks best with the lights turned down low. 

 



 The last one is ~ Colour-coded keyboards

 

This is short video with some pictures  in it :

 

 

 

 

 

 

 

 

 

Some other examples may be Keyboards with larger keys or keyboards for one handed or one fingered typist !!

 

 

That`s all for today hope you`ll find it interesting. If you have any questions, don`t be shy just comment me and I`ll be happy to respond !!!!!!!!!

 

Good night ,

       Chantelle