Hi,

I am new in electronics and I am getting confuse between what is the actual difference between 8 bit and 16 bit micro controller ?

Some say that 8 bit micro controller process 8 bit of data and 16 bit micro controller process 16 bit of data.
Some say that 8 bit micro controller have 8 bit of address line and 16 bit micro controller have 16 bit of address line

Can anyone here tell me actual differences ?

Thanks
Ash

 

Hi,

I am new in electronics and I am getting confuse between what is the actual difference between 8 bit and 16 bit micro controller ?

Some say that 8 bit micro controller process 8 bit of data and 16 bit micro controller process 16 bit of data.
Some say that 8 bit micro controller have 8 bit of address line and 16 bit micro controller have 16 bit of address line

Can anyone here tell me actual differences ?

Thanks
Ash

What controller in particular are you familiar with?

 

The terms refer to the CPU's wordlength only (how many data bits the Accumulator, Working Register or register(s) of a similar function can hold, not counting special flags such as carry, overflow, negativr, etc. that may be associated with the register(s)).

 

Um... normally new people don't give a damn about these things.
New people care about three things: support, cost, features.

Here is 32 bit microcontroller that is ready to be used, has great features, has tone of support and decent cost: https://www.ebay.com/itm/Arduino-Du...957774?hash=item213492d10e:g:gzoAAOSwDKtY2LsI
Go and build something, and stop wasting time on questions that became irrelevant 15 years ago.

 

Hi,
what is the actual difference between 8 bit and 16 bit micro controller ?
Can anyone here tell me actual differences ?

let's suppose you have two device's one has 8 wires and other has 16 wires.
You can send 8 signal's from 8 wire's and 16 signal's from 16 wires.

If you have 8 wires then you can control 8 led's if you have 16 wires you can control 16 led's.

1 bit = 1 pin = 1 wire = 1 input
These all are same things, don't be confuse

Here you are dealing with 8 bit data
8 bit addition : 10011011 + 1001010 = 11100101

8 bit's = 8 pin's = 8 wire's = 8 input's = 10011011
8 bit's = 8 pin's = 8 wire's = 8 input's = 1001010

Result
8 bit's = 8 pin's = 8 wire's = 8 input's = 11100101

You can say 2 bit device if your device has two data pins. like 2 bit AND gate IC

I hope above example will help you....!

 

let's suppose you have two device's one has 8 wires and other has 16 wires.
You can send 8 signal's from 8 wire's and 16 signal's from 16 wires.

If you have 8 wires then you can control 8 led's if you have 16 wires you can control 16 led's.

1 bit = 1 pin = 1 wire = 1 input
These all are same things, don't be confuse

Here you are dealing with 8 bit data
8 bit addition : 10011011 + 1001010 = 11100101

8 bit's = 8 pin's = 8 wire's = 8 input's = 10011011
8 bit's = 8 pin's = 8 wire's = 8 input's = 1001010

Result
8 bit's = 8 pin's = 8 wire's = 8 input's = 11100101

You can say 2 bit device if your device has two data pins. like 2 bit AND gate IC

I hope above example will help you....!

no offense but that's complete baloney. You can have 8 bit controllers that control large numbers of pins/inputs/outputs and 16 bit controllers with a small number of pins/inputs/outputs. 8 and 16 bit simply refer to the basic width that the arithmetic logic unit (ALU) uses inside the processor. If it does math in 8 bit chunks, it's an 8 bit processor. It's not about output or input pins.

 

It's not about output or input pins.

I wanted to make it simple for @ashutosh 123. That's why I gave many examples. I didn't use word "controller" in my explanation. I wanted to tell him what is bit for any device. I think He doesn't understand actually what is bit ?

 

Hi,

I am new in electronics and I am getting confuse between what is the actual difference between 8 bit and 16 bit micro controller ?

Some say that 8 bit micro controller process 8 bit of data and 16 bit micro controller process 16 bit of data.
Some say that 8 bit micro controller have 8 bit of address line and 16 bit micro controller have 16 bit of address line

Can anyone here tell me actual differences ?

Thanks
Ash

It is about how many lines they can do in parallel at a time, 8bit can do 16bits but needs to repeat two times + overhead
Then you have serial like USB, convention is to measure in bytes which are 8bit so 8bit is pretty standard also 16bit controllers
are not as much common and arent as often used as a starting point for beginners.

8bit also could have 100 IO like others pointed out bit will be treated as seperate 8bit pieces

 

Hi,

Forget it. Don't bother investigating it. Ignore what everyone here has said (no offence to other awesome members here). If you are asking this question then you do not understand what microcontrollers are and how they work. You need to learn these things from the ground up so you are best looking at these resources;

• http://www.microchip.com/forums/m976093.aspx
  
• http://www.hobbyprojects.com/pic_tutorials/introduction_to_pic.html
  
• https://www.markhennessy.co.uk/pic/
  
• https://en.wikipedia.org/wiki/Microcontroller
  
• https://www.sciencedirect.com/science/book/9780124518384
  

Regards,
Robin