Representation of negative number, Electrical Engineering

Assignment Help:

Representation of Negative Number:

As  mentioned  in chapter 1 in 8085  negative  numbers are represented in 2 complement  form  and subtraction is  performed  using 2  complemented  method.  If the  result of subtraction is negative  it will also  be in 2 complement  form. But  D7 ( left most bit) is used  to indicate sign  of a number. If D7  is 0 the number  is positive  and if D7  is 1  the number is negative D7  is 1 for  2 complement of  all D7 bit  numbers.

Important : Generally  people  have misconnect that the  difference  between a positive  number and a  negative  number is only in  D7.  They assume that if  +5 10 is  written  in 8 bit  binary as 00001012 then -510  can be  written  as 10000102, which  is not  correct.

Refer followings  table  showing various  positive  and negative numbers to understand the concept  of negative  number as used  in microprocessors.

a.All negative numbers have 1 in  their left  most bit positions.

b.All negative  numbers are 2  complement  form  of their  corresponding  positive  numbers.

c. All negative  have their  equivalent positive  decimal number. It is up to the programmer  and the  application that whether  to use it as  negative or positive number.

d.If two numbers are added/ subtracted the  result will be as desired whether is a singed  or unsigned operation. See  followings  example.


Related Discussions:- Representation of negative number

Zero-bias equilibrium, Zero-Bias Equilibrium In a p-n junction, with n...

Zero-Bias Equilibrium In a p-n junction, with no an external applied voltage, an equilibrium condition is arrived at in which a potential variation is formed across the juncti

Compute the capacitance, Figure shows the cross-section of an electrostatic...

Figure shows the cross-section of an electrostatic problem with translational symmetry: a rectangular coaxial cable. The inner conductor is held at 10 volts and the outer conductor

Fourier transform for the function, The far-field pattern of an antenna can...

The far-field pattern of an antenna can be modeled as the two dimensional Fourier Transform of the aperture. 1. Determine the 2D Fourier Transform for the function

Transformers, AC Operation of an iron core         ...

AC Operation of an iron core         Hence, if a wattmeter were used to measure the power delivered over a full period of the waveform (which will also b

Multiplexers and flip flops, Decoders and multiplexers are termed, medium s...

Decoders and multiplexers are termed, medium scale integration (MSI) devices; this term implies that the device is complex in construction and usually its operation as well. Below

DC motor and DC generator, write down the similarities between motors and g...

write down the similarities between motors and generators

#emf., what is the effect of back emf ?

what is the effect of back emf ?

Digital modulation using matlab, hi I want the code of digital modulation i...

hi I want the code of digital modulation in matlab with inputs binary bit stream and M-ar

Determine the output voltage, Q. In a differentiating circuit, R=10 kW,and ...

Q. In a differentiating circuit, R=10 kW,and C=2.2μF.If the input voltage goes from 0V to 10 V at a constant rate in 0.4s, determine the output voltage. Solution: e 0 =

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd