0
Microprocessors
A microprocessor is the heart of any computer, whether it is a server, a desktop machine, or a laptop. This single chip contains the arithmetic, control, and logic circuitry necessary to interpret and execute computer programs.
2,578 Questions
What is the set of rules called the govern Canada?
Canada has a self-ruled government. They have a constitution that they follow.
What is difference between microprocesser and microcontroller?
An embedded system has historically been defined as a single function product where the intelligence is embedded in the system. It could be anything from a dishwasher to a hearing aid, if that product includes a microprocessor and software. Many of today's embedded systems are looking more like PCs with user interfaces, touchscreens, displays, keypads and more. Still, these are not general function systems but are designed to perform very specific functions. An embedded system makes use of embedded hardware (microprocessor) and embedded software to accomplish its purpose. Embedded software is generally comprised of: * Real-time operating system (RTOS) * Drivers (HW peripheral interface) * Application software
Difference between 8051 and 8751 micro controllers?
There are many differences between the 8085 and the 8086/8088. Naming just a few...
- 8085 is an 8 bit processor, while 8086 is a 16 bit processor
- 8085 has a 16 bit address bus, while 8086 has a 20 bit address bus
- 8085 has an 8 bit data bus
- 8088 has an 8 bit data bus
- 8086 has a 16 bit data bus
- 8086 has a segmented architecture to support the 20 bit address bus
- 8086 has additional registers that support string and repeated loop instructions
- 8086 has addition register that support stack frame parameter addressing
- 8086 has more addressing modes, including cross-segment modes
- 8086 has more types of interrupts, including debug single-step
- 8086 has true multiplication and division instructions
If anyone has any more examples, please fee free to add to the list.
What is more accurate Duel Core or Core 2 Duo?
Seeing as Core 2 Duo sounds redundant (since 2 is the same as duo), I would say that Duel Core is more accurate, unless they are two different things. If they aren't the same, core 2 Duo could be an upgrade from duel core, but that just might be just me.
How do you connect two monitor to one PC?
Depending on the motherboard model, you may need to use a PCI video card. On some of the Gateways, the on board video is using the AGP, so if you put an AGP card in, the on board shuts itself off. Just go to newegg.com or other computer parts seller and purchase a dual head video card.
What is pin configuration of microprocessor 8088?
the pin configuration of a processor means that the diagramatic representation of block diagram of processor representing various pins and the function of that pins
banacl
How much gold is in a computer processor?
Not much, since the gold is typically just a thin plate over copper traces. Printed circuit gold is usually only one or two mils thick and you'd need several boards to make up an ounce of gold. It IS worth it, but you'd need to process several boards to make it worth your time and effort.
Who invented computers in the ninteenth century?
Blaise pascal invented the first mechanical adding machine in 1642.but Charles Babbage was father of morden computer
Blaise pascal invented the first mechanical adding machine in 1642.but Charles Babbage was father of morden computer. O.C.A.BARIPADA
Computers weren't discovered, they were invented. In its most basic understanding, computers were invented thousands of years ago by the Chinese, however that is clearly not the case for electronic
Were microcomputers a part of the first generation of computers?
No, the earliest computers (from the 1940s to the mid 1960s) were all mainframe computers. The first microcomputers were made in the early 1970s. However many of the earliest computers were much slower and had far less memory than the earliest microcomputers!
How microprocessor revolutionized the computer industry?
Today's computer would be nothing like it is now without the microprocessor. Most every electronic device has a microprocessor in it, from garage door openers, to remote controls, and cell phones. The microprocessor revolutionized electronics, giving them intelligence, and making our lives easier. Thus, it revolutionized the computer industry.
What is the significance of silicon chips in the computer?
Silicon is a metalloid which mean that it contains some properties of metals and nonmetals. Silicon does not conduct heat very well (property of a nonmetal), it is solid at room temp (property of most metals), and has a high melting point so when computers and other electronics are being heavily used they stay together.
What is the brain of the computer called?
The "computer" part.
Humans have built computers with our understanding of cognitive science. Computers implement a processor, memory for temporary data storage (during processing, caching, etc), and a hard-drive for persistent data. A human brain can store data long term, process information, and temporarily hold small amounts of data for short times while processing the information (e.g. "Carry the 2...").
Where was the microprocessor invented?
Jack Kilby at Texas Instruments invented the first monolithic integrated circuit in 1958. His device consisted of a bar of Germanium in which all the components were formed, but still required manual wiring of those components under a microscope.
Robert Noyce at Fairchild Semiconductor invented an improved monolithic integrated circuit about 6 months later. His device consisted of Silicon and using Fairchild's newly developed planar process allowed both components and wiring to be formed together. This process has been used for ICs ever since.
Federico Faggin at Intel invented the first commercial microprocessor IC, the 4004, in 1971.
What was the first microprocessor used in home computers?
The first microprocessors emerged in the early 1970s and were used for electronic calculators, using binary-coded decimal (BCD) arithmetic on 4-bit words. Other embedded uses of 4-bit and 8-bit microprocessors, such as terminals, printers, various kinds of automation etc., followed soon after. Affordable 8-bit microprocessors with 16-bit addressing also led to the first general-purpose microcomputers from the mid-1970s on.
What is the difference between AVR microcontroller and pic microcontroller?
The difference is base on the requirement of their0 application.
What are the internal parts of CPU?
motherboard, graphics card (if you have a fast computer), hard drive, power supply, CD drive, slave hard drive, cooling system,....
CPU has many parts:a motherboard(processor,heat sink,fans,slots);
hard disk,vga port,ide ports,smps(switch mode power supply),sata cables,pci slots.
Write program to divide two number using 8085 microprocessor?
LDA 9000H
MOV B,A
LDA 9001H
MOV E,A
MVI C,00H
MOV A,B
LOOP : INR C
SUB E
JNZ LOOP
ADD E
DCR C
STA 9002H
MOV E,A
STA 9003H
Input the 2 numbers in 9000 & 9001.
Remainder stored in 9002, Quotient stored in 9003.
Advantages of parallel computing?
Save time and/or money: In theory, throwing more resources at a task will shorten its time to completion, with potential cost savings. Parallel clusters can be built from cheap, commodity components.
Provide concurrency: A single compute resource can only do one thing at a time. Multiple computing resources can be doing many things simultaneously
Use of non-local resources: Using compute resources on a wide area network, or even the internet when local compute resources are scarce.
Limits to serial computing: Both physical and practical reasons pose significant constraints to simply building ever faster serial computers:
- Transmission speeds - the speed of a serial computer is directly dependent upon how fast data can move through hardware. Absolute limits are the speed of light (30 cm/nanosecond) and the transmission limit of copper wire (9 cm/nanosecond). Increasing speeds necessitate increasing proximity of processing elements.
- Limits to miniaturization - processor technology is allowing an increasing number of transistors to be placed on a chip. However, even with molecular or atomic-level components, a limit will be reached on how small components can be.
- Economic limitations - it is increasingly expensive to make a single processor faster. Using a larger number of moderately fast commodity processors to achieve the same (or better) performance is less expensive.
In magnetism:
An eddy current is induced into a metal when magnetic lines of force move across it. A South pole causes circulating current in clockwise direction while a North pole causes current in counter-clockwise direction. These eddy currents thus buck the applied forces. Eddy currents are undesirable when induced into transformer cores causing power loss. Lamination of core material reduces current flow in the core. Current induced into the secondary winding of a transformer is a used to step-up or step-down voltages so that they can be of a correct size for end-use applications.
<><><>
When time-varying magnetic field is applied to electrical machines like transformers, a time-varying emf is induced in the transformer cores. A short circuit occurs at the molecular level in the core. Due to less resistance, a large current begins to flow in the core. This causes heating in the core. Actually the path of the current is circular resembling the circular waves in a pool of water (eddy). Hence these currents are called eddy currents.
In fluids:
In water flow, an eddy is a current that flows opposite the normal flow. If on a river, an eddy is a current that will flow upstream in a side channel filling it, even if the flow is in an opposite direction of the original flow. It is equivalent to a stream's water level rising because the river it feeds has more water in it than the stream, thus making the water flow upstream. It can also be an area that seems not to have a current at all.
A:
Just like there exists a magnetic path due to current (charge) flow in a conductor (direction given by right hand rule), the thing works other way as well...
When there is a flux path crossing a current conducting material, there exists current paths around the flux line on the conductor plane centered to the point where flux line meets the plane. These currents are eddy currents.
Commonly available in magnetic circuits. Laminations are done to minimize the ability to flow eddy currents.
Assembly language program to convert 8 bit binary to ascii code?
BinarySearch proc ;params: array (of integers), length, target
push ebp
mov ebp, esp
mov ebx, [ebp + 8]
mov ecx, [ebp + 12]
xor edx, edx
dec ecx
jmp LoopCond
LoopStart:
mov eax, edx
add eax, ecx
shr eax, 1
push ecx
mov ecx, [ebp + 16]
cmp [eax * 4 + ebx], ecx
pop ecx
je Exit
jl UpperHalf
mov ecx, eax
dec ecx
jmp LoopCond
UpperHalf:
mov edx, eax
inc edx
LoopCond:
cmp ecx, edx
jge LoopStart
mov eax, -1
Exit:
pop ebp
ret
BinarySearch endp
Block Diagram of Microprocessor based system?
A computer can process data, pictures, sound and graphics. They can solve highly complicated problems quickly and accurately.
Input Unit:
Computers need to receive data and instruction in order to solve any problem. Therefore we need to input the data and instructions into the computers. The input unit consists of one or more input devices. Keyboard is the one of the most commonly used input device. Other commonly used input devices are the mouse, floppy disk drive, magnetic tape, etc. All the input devices perform the following functions.
- Accept the data and instructions from the outside world.
- Convert it to a form that the computer can understand.
- Supply the converted data to the computer system for further processing.
Storage Unit:
The storage unit of the computer holds data and instructions that are entered through the input unit, before they are processed. It preserves the intermediate and final results before these are sent to the output devices. It also saves the data for the later use. The various storage devices of a computer system are divided into two categories.
1. Primary Storage: Stores and provides very fast. This memory is generally used to hold the program being currently executed in the computer, the data being received from the input unit, the intermediate and final results of the program. The primary memory is temporary in nature. The data is lost, when the computer is switched off. In order to store the data permanently, the data has to be transferred to the secondary memory.
The cost of the primary storage is more compared to the secondary storage. Therefore most computers have limited primary storage capacity.
2. Secondary Storage: Secondary storage is used like an archive. It stores several programs, documents, data bases etc. The programs that you run on the computer are first transferred to the primary memory before it is actually run. Whenever the results are saved, again they get stored in the secondary memory. The secondary memory is slower and cheaper than the primary memory. Some of the commonly used secondary memory devices are Hard disk, CD, etc.,
Memory Size:
All digital computers use the binary system, i.e. 0's and 1's. Each character or a number is represented by an 8 bit code.
The set of 8 bits is called a byte.
A character occupies 1 byte space.
A numeric occupies 2 byte space.
Byte is the space occupied in the memory.
The size of the primary storage is specified in KB (Kilobytes) or MB (Megabyte). One KB is equal to 1024 bytes and one MB is equal to 1000KB. The size of the primary storage in a typical PC usually starts at 16MB. PCs having 32 MB, 48MB, 128 MB, 256MB memory are quite common.
Output Unit:
The output unit of a computer provides the information and results of a computation to outside world. Printers, Visual Display Unit (VDU) are the commonly used output devices. Other commonly used output devices are floppy disk drive, hard disk drive, and magnetic tape drive.
Arithmetic Logical Unit:
All calculations are performed in the Arithmetic Logic Unit (ALU) of the computer. It also does comparison and takes decision. The ALU can perform basic operations such as addition, subtraction, multiplication, division, etc and does logic operations viz, >, <, =, 'etc. Whenever calculations are required, the control unit transfers the data from storage unit to ALU once the computations are done, the results are transferred to the storage unit by the control unit and then it is send to the output unit for displaying results.
Control Unit:
It controls all other units in the computer. The control unit instructs the input unit, where to store the data after receiving it from the user. It controls the flow of data and instructions from the storage unit to ALU. It also controls the flow of results from the ALU to the storage unit. The control unit is generally referred as the central nervous system of the computer that control and synchronizes its working.
Central Processing Unit:
The control unit and ALU of the computer are together known as the Central Processing Unit (CPU). The CPU is like brain performs the following functions:
• It performs all calculations.
• It takes all decisions.
• It controls all units of the computer.
A PC may have CPU-IC such as Intel 8088, 80286, 80386, 80486, Celeron, Pentium, Pentium Pro, Pentium II, Pentium III, Pentium IV, Dual Core, and AMD etc.
