Task 01 Windows 10
Full transcript is available from vic@kanduit.co.uk
Should our choice be Windows 10 32 bit or 64 bit
Before we talk about windows 10 requirements we should establish the architecture of the motherboard and the associated components. Then decide on which version of windows 10 should be installed. Windows 10 32 bit or windows 10 64 bit. Getting it wrong could spell disaster, wasting our time and effort.
To discover this, we have to talk about bits and bytes, a subject that can be somewhat boring but it is essential to know as computer technicians and that will help us not to make mistakes
We know that computers work on zero’s and one’s, and that CPU contains transistors amongst other things. This is a symbol for a transistor, it has three leads. These are called base, collector and emitter. If we apply a voltage across it current will try and flow from the emitter to the collector. Under these conditions it will not happen until a voltage is applied to the base, now current can flow. Let’s alter the circuit and include a switch.
When the switch is open no current can flow, close the switch and current will flow from the emitter to the collector.
Let’s put a bulb in the collector, when the switch is open no current can flow so the bulb does not light, close the switch and current can flow to the bulb and it lights.
We could say in the off position this could represent a zero, when the switch is close the bulb will light so this could signify a one.
So this circuit represents our one bit and while the bulb is alight the bit is set
As a single component there’s not much we can do with it so let’s add a further transistor or another bit and examine the possible combinations on the conditions of them.
We always work from right to left with binary, so in our example the first bit is the one on the right-hand side, and the last bit is always on the far left-hand side. So right now they are both off or we could say 00.
If we now set the first bit one, remember we work from right to left so we have 01.
Now set the last bit on so we have 10
There is only one other combination and that is to set them both on, 11
This is a two-bit number
We could be tempted to say ten and eleven, but in binary there are only zeros and ones
Now we shall add our decimal number under these two bits, first a 1 under the fist bit, we double the 1 to make 2 and put that under the last bit.
So when the first bit is on, we have a decimal 1, and when last bit on, we have a decimal 2
To keep track on our progress we shall create a table
By setting the first bit on we have 01 in binary and decimal 1
Setting the last bit, we have 10 in binary and 2 in decimal
As we discovered before the only other combination is to set both bits on or 11 in binary or 3 in decimal, why three? because we have added the decimal 2 and 1 together
So the maximum 2-bit binary number is equal to 11 or 3 decimal
Once again there is little we can do with this so let’s expand out circuit to three bits and see the effect
We shall take our decimal 2 and double it to 4, now when the third or last bit is on we have a binary number of 100 or a decimal 4
Let’s start again. In this state we have 000 or decimal 0, when we set the first bit on we have 001 and a decimal 1, setting the next bit on we have 010 or decimal 2, 011 or decimal 3. This is the maximum that a two-bit number can be, but we have a further bit so 100 is equal to decimal 4
Since the third bit and first bit are on then we have decimal 5
Setting the last two bits mean decimal 6
And finally setting all the bits means binary 111 and decimal 7. So the maximum 3 bit binary number is 111 which is the same as decimal 7.
Now we shall expand our circuit once more to include a 4-bit number, we take the decimal 4 and double it for our last bit, so when this last bit is set it will represent decimal 8
So running through it is the same as in a 2-bit number, 3-bit number. Now when the last bit is set or 1000 we have a decimal 8. When the first bit is set again we have decimal 9 and so on until all the bits have been set. Therefore, the maximum 4-bit number is 1111 or 15 decimal
Here is an 8-bit number, we take the decimal 8 and double it, and do the same for the remaining bits which means the last bit is 128
In the 70 and eighties the 8 bit computers became very popular, most where for home entertainment and education use
Back to the binary numbers, this works on the same principle as before, when we set the first bit we have 00000001 which is the same as our decimal 1
When the second bit is set then it is decimal 2 and so on and so forth
Maximum 8-bit number is 11111111 or 255 decimal. The main point here is when all the bits are set then the maximised binary number has been reached.
Here is a 16-bit number
32-bit number
And a 64-bit number
Let’s analyse these numbers and say each of these different binary systems had to deal with a very large number as show here.
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