Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Explain about 4-bit adder-subtractor circuit?
Subtraction operation on binary numbers can be obtained by succession of addition operations only it implies that to achieve subtraction A-B we can find 2's complement of B. This can be computed by 1's complemented and then adding 1 to it. So a common circuit can carry out addition and subtraction operation. A 4-bit adder subtraction circuit is displayed in figure below that is formed by employing XOR gate with each full adder. XOR gate with output 0 is for inspecting overflow.
Figure: 4-bit adder-subtractor circuit
Control input 'x' controls operations it implies that if x =0 then circuit acts as an adder and if x =1 then circuit acts as a subtractor. The operation is summarized as below:
a. When x = 0, c = 0, output of all XOR gates would be same as corresponding input Bi where i = 0 to 3. So Ai and Bi are added by full adders providing Sum Si and carry Ci .
b. When x = 1 output of all XOR gates will be complement of input Bi where i =0 to 3 to that carry C0=1 is added. So circuit finds A plus 2's complement of B which is equal to A-B.
All components of computer communicate with processor by the system bus. Which means I/O devices required to be attached to system bus. But I/O devices aren't connected directly to
Define pipelining Pipelining is an efficient way of organizing concurrent activity in a computer system. The processor implements the program by fetching and implementing instr
is data bus is bidirectional
Performance instrumentation focuses on how to resourcefully collect information about computation of parallel computer. Method of instrumentation mostly tries to capture informatio
Utilization Summary The Utilization Summary shows the status of each processor i.e. how much time (in the form of percentage) have been spent by every processor in busy mode, o
Create a class called auditorium that specifies the seats in the auditorium. The class should include at least one data item: seat (two dimensional array of Char) and at least thre
What are the functions of passes used in two-pass assembler? In an assembly language program, two pass translations can handle forward references early. The subsequent task
Microprocessor is a program-controlled device, which fetches the instructions from memory, decodes and implements the instructions. Most Micro Processor is single- chip devices.
Floating point Arithmetic pipelines Floating point computations are the finest candidates for pipelining. Take the instance of addition of two floating point numbers. Following
What is process control block? Each process is shown in the OS by a process control block. It having many pieces of information associated with a specific process.
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd