What is the difference between single bus and multiple bus. Computer bus structures california state university. Pdf multiple choice questions on 8086 microprocessor. The main advantage of multiple bus organisation over single bus is, when the ret instruction at the end of subroutine is executed.
Computer architecture objective type questions pdf download. Multiple bus based hierarchical ivhltiprocessors and their bandwidth analysis sycd masud mahmud. Chapterwise computer organization multiple choice questions. Let me know if you need more study material on the same topic. There are 9 files attached on different topics about computer organization. Computer organization and architecture instruction set design.
Bus is a group of conducting wires which carries information, all the peripherals are connected to microprocessor through bus. In multi bus architecture all the general purpose registers are called combined into. Computer organization and architecture mcqs ezgolearning. Data bus a bus which carries data to and from memoryio is called as data bus. Computer organization and architecture, by william stallings, 6th edition bus interconnection schemes single bus single bus problems lots of devices on one bus leads to.
The data and address lines of the external memory bus connected to the internal processor bus via the memory data register, mdr, and the memory address register, mar respectively. Explain the multiple bus organization structure, computer. Multiplebus organization ppt video online download slideplayer. Download objective type questions of computer architecture pdf visit our pdf store. Multiple bus hierarchies if a great number of devices are. If you continue browsing the site, you agree to the use of cookies on this website. Multiplebus organization, hardwired control, micro programmed control. The measure of location which is the most likely to be influenced by extreme values in the data set is the a.
Compare single bus structure and multiple bus structure. What is a system bus, data bus, address bus, control bus. It contains well written, well thought and well explained computer science and programming articles, quizzes and practicecompetitive programmingcompany interview. The computer organization notes pdf co pdf book starts with the topics covering basic operational concepts, register transfer language, control memory, addition and subtraction, memory hierarchy, peripheral devices, characteristics of multiprocessors, etc. Analysis of multiplebus interconnection networks deep blue. Multibus is a computer bus standard used in industrial systems. One bus organization in one bus organisation, a single bus is used for multiple purpose. An address bus is a bus that is used to specify a physical address. A multiple bus structure has multiple inter connected. Multiprocessor operating system refers to the use of two or more central processing units cpu within a single computer system. Similarly, when ri out is set to 1, the contents of register ri are placed on the bus. Alu and all the registers are interconnected via a single common bus. Cpu architecture microprocessing unit is synonymous to central processing unit, cpu used in traditional computer. What is the benefit of multiple bus architecture compared to.
Computer organization pdf notes co notes pdf smartzworld. The data bus, which is a bidirectional path, carries the actual data between the processor, the memory and the peripherals. Cpu needs to read an instruction data from a given location in memory zidentify the source or destination of data zbus width determines maximum memory capacity of system e. The width of the address bus determines the amount of memory a system can address. The address bus is used to specify memory locations for the data being transferred. Single bus structure is low cost very flexible for attaching peripheral devices. This computer maintenance multiple choice questions with answers will contain an overall description in the. Determines which device can use the bus at any time. Mar 27, 1990 the present modular and hierarchical multiple bus architecture contemplates both serial and parallel arrangements at each bus level, in such a way that any processor engine module which is connected onto the master bus as a slave incorporates its own distinct bus, which distinct slave bus is under the mastery of the module or slave processor. Propagation delays long data paths mean that coordination of bus use can adversely affect performance. Computer architecture mcq multiple choice question and answer computer architecture mcq with detailed explanation for interview, entrance and competitive exams. Pdf reduction of connections for multibus organization.
To achieve a reasonable speed of operation, a computer must be organized so. In single bus structure inside the cpu, different components are linked by a single bus. Just like a passenger bus that carries people, the computer bus carries lots of information using numerous pathway called circuit lines. Address bus this is used to carry the address of data in the memory and its width is equal to the number of bits in the mar of the memory. Apr 29, 2016 computer organization andarchitecturequestionsandanswers slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Here is the list of most important computer organization and architecture mcqs for the preparation of competitive exams like fpsc, kppsc, etea, ppsc, nts. Memory readwrite, io readwrite two types of bus organizations. Computer architecture and organization pdf notes cao pdf. Multiple bus structure certainly increases, the performance but also increases the. Diagram to represent bus organization system of 8085 microprocessor. Mar 24, 2015 the control bus carries the control, timing and coordination signals to manage the various functions across the system. Multiple bus organization contd bus a bus b incrementer bus c pc re gister file constant 4 mux a alu r b instruction decoder ir memory data lines mdr. Here you can download the free lecture notes of computer organization pdf notes co notes pdf materials with multiple file links to download.
Changes occur relative to the falling or rising edge of the clock. Computer organization and architecture tutorials geeksforgeeks. Single bus structure and multiple bus structures are types of bus or computing. In this article, we are going to discuss the single bus structure in computer organization. Download all the pdf to learn chapter wise syllabus. Tech computer organization and study material or you can buy b. Control sequence for an unconditional branch instruction. Here you can download free lecture notes of computer architecture and organization notes pdf cao notes pdf materials with multiple file links to download. In multiple bus organisation, the registers are collectively. Mar 23, 2018 computer organization and architecture lecture 14 what is a bus. If a great number of devices are connected to the bus performance will suffer. A bus is basically a subsystem which transfers data between the components of a computer components either within a computer or between two computers.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. I believe the question is referring to system level cpu peripherals busses and not an enterprise service bus which the previous response appears to refer to. It contains well written, well thought and well explained computer science and programming articles, quizzes and practicecompetitive programmingcompany interview questions. Computer architecture multiple choice questions and answers pdf click here pdf book computer organization and architecture multiple choice questions and answers guide for free without registration. Single bus structure in computer organization with diagram. This article first describes fundamental information on bus architectures and bus protocols, and then provides specific information on various industry standard bus architectures from the past and the present. At any given point of time, information can be transferred between any two units. Uniti 8l register transfer language, bus and memory transfers, bus architecture, bus arbitration, arithmetic logic, shift microoperation. Multiple busbased hierarchical ivhltiprocessors and their. Control bus carries the control signals between the various units of the computer. A bus master wanting to use the bus asserts the bus request a bus master cannot use the bus until its request is granted a bus master must signal to the arbiter after finish using the bus bus arbitration sch emes usually try to balance two factors. The following transfer statements specify a memory. Tech 2nd year lecture notes, books, study materials pdf, for engineering students.
Computer organization multiple choice questions and answers or mcqs with answers from chapter digital logic circuit. We provided the download links to computer organization pdf free download b. Reduction of connections for multibus organization. A set of general purpose register, program counter, instruction register, memory address registermar, memory data registermdr are connected with the single bus. It was developed by intel corporation and was adopted as the ieee 796 bus the multibus specification was important because it was a robust, wellthought out industry standard with a relatively large form factor, so complex devices could be designed on it. This definition explains what a processor is, what its functions and basic components are and how it works. In addition to the lines that carry the data, the bus must have lines for address and. Microprocessor mpu acts as a device or a group of devices whi. Unlike a crossbar or multistage network, a multiplebus interconnection. Chap 3 elements of bus design william stallings computer. Bus organization of 8085 microprocessor geeksforgeeks. These multiple cpus are in a close communication sharing the computer bus, memory and other peripheral devices. Question bank paper i fundamentals of computer computer.
The multiple bus organization is using more buses instead of one bus to decrease the number of steps needed and to give multiple paths that enable various transfers to take place i. The various components available inside cpu in this architecture includes instruction register ir, instruction decoder id, program counter pc, memory address register mar, memory data register mdr, arithmetic and logic unit alu and general purpose register. Computer organizationandarchitecturequestionsandanswers. Computer organization and architecture instruction set design one goal of instruction set design is to minimize instruction length another goal in cisc design is to maximize flexibility many instructions were designed with compilers in mind determining how operands are addressed modes is a key component of instruction set design. Computer bus structures california state university, northridge. Bus usb and ieee 94 are examples of serial buses while the isa and pci buses are examples of popular parallel buses. Multiple choice questions 50% all answers must be written on the answer sheet. Bus and cache memory organizations for multiprocessors by donald charles winsor a dissertation submitted in partial ful. Since the bus can be used for only one transfer at a time, only two units can. These quiz or objective questions answers are based on half adder, flipflop etc. Mar 25, 2018 they use a special electronic communication system called the bus. Hierarchical multiple bus computer architecture ncr corporation. When a processor or dmaenabled device needs to read or write to a memory location, it specifies that memory location on the address bus the value to be read or written is sent on the data bus. William stallings computer organization and architecture 8th edition chapter 3 elements of bus design what is a.