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Register Higer bits and lower bits

P: 3
Please tell me what is higher and lower bits in a 8 bit register with value 01101010. Is the bits with value 1 are higher bit and bits with 0 value are lower bits.
Oct 29 '09 #1

✓ answered by Banfa

No the terms lowest, lower, low, highest, higher and high when refering to bits usually refer to the bits position in the byte, word or register, not its current value.

The bits value is normally referred to as 1, set and true or 0, clear and false.

It is important to know which is the lowest, and by implication which is the highest bit in the register. bits are normally numbered from right to left starting at zero so for your 8 bit register

Expand|Select|Wrap|Line Numbers
  1. Bit Number  76543210
  2. Bit Value   01101010
  3.  
But you will need to refer to your hardware technical specification or data sheet in order to find out which is the highest and lowest bit and therefore how to access them. There is no absolute standard although commonly bit 0 is the lowest bit.

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2 Replies

Banfa
Expert Mod 5K+
P: 8,972
No the terms lowest, lower, low, highest, higher and high when refering to bits usually refer to the bits position in the byte, word or register, not its current value.

The bits value is normally referred to as 1, set and true or 0, clear and false.

It is important to know which is the lowest, and by implication which is the highest bit in the register. bits are normally numbered from right to left starting at zero so for your 8 bit register

Expand|Select|Wrap|Line Numbers
  1. Bit Number  76543210
  2. Bit Value   01101010
  3.  
But you will need to refer to your hardware technical specification or data sheet in order to find out which is the highest and lowest bit and therefore how to access them. There is no absolute standard although commonly bit 0 is the lowest bit.
Oct 29 '09 #2

P: 3
Thanks You Banfa. It helped me to get what I want.
Oct 29 '09 #3

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