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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 function of hold pin in 8085 microprocessor?
The HOLD pin on the 8085 is an external request for control of the bus. Upon receipt of HOLD, the 8085 will complete its current cycle and assert HLDA (HOLD Acknowledge), and then it will float the address, data, and control bus one half clock cycle later. The external hardware is then free to use the bus. When it is done, it releases HOLD, the 8085 releases HLDA, and the 8085 takes control of the bus and continues with the next cycle. HOLD is used by external DMA controllers, such as the 8257, to transfer data to and from memory on behalf of high speed peripherals, without requiring 8085 attention to that data transfer.
The logic unit is the part of the CPU which performs all of the calculations?
no calculation are happening in arithmetic unit,logical operations in logic unite.
both happening in ALU,
How do you check a CPU harddrive without taking a CPU apart?
you would have to look it up or else just take it apart.
In the prealgebra math caching from mathbitsdotcom what is the answer to box 7?
Box 7 code is 15730, boz 8 code is 118165.
How many central processors are there in modern computers?
Number of Processors in a Computer depends on the type of Computer. If it is a Server Computer then it use Multiple Processors based Motherboard to serve with fast operations whereas normal Home based computers are machines with single Processors.
Nowadays CPU can comprise of Multiple Cores of CPUs on a single fabric, for eg. Intel Dual Core, Core2Duo & Coe2Quad CPUs.
What is a program for a processor speed test?
There are lots of programs out there that will help someone perform a processor speed test. Some of these programs include; CPU Speed Professional, CPU Speed Pro Software, and CPU Speed Test Software.
Difference between BIOS and dos functions?
What is the difference between BIOS and DOS routines? how many types of interrupts?
Different Answer
BIOS stands for Basic Input/Output System, while DOS stands for Disk Operating System. BIOS is considered "Firmware" because it retains the bit data within it after the machines power is turned off (EEPROM). The BIOS is the sub-layer of machine code that allows an AT style computer to start running. When you have a PC in front of you with its power off, what you have is all the hardware in one place in a configuration necessary to allow a (Powerful) digital computer to come to life in front of you. Let's imagine we've removed the BIOS chip. Now let's apply power. The computer would sit there doing nothing. Even though DOS (or Windows XX) may be installed on some external storage device, the hardware has no way of knowing this.
The CPU hardware is designed to force the first instruction it executes to be a Jump through memory location zero (Indirect Addressing). At location zero is supposed to be the address of the first external instruction to be executed. Without the BIOS chip installed, there is no instruction location address for the computer to start executing, so the machine would fail to start. To the computer, there is no software found in the machine. Without software, hardware is useless... without hardware, software is useless.
Let's power off, re-install BIOS, and turn power on. Now the general sequence of events is something like this;
· Jump through location zero to start running a program found at that address.
· Find out what basic hardware is present on the buses.
· Do a preliminary hardware check of these devices to determine if they are working.
· Stack a series of driver programs in memory that service the interrupts for these devices.
· Go to the BIOS defined external device to find an Operating System (OS).
· Load the found OS's boot program into memory.
· Turn control of the computer over to the OS boot program.
· The boot program loads memory with the OS executive loop and turns control over to it.
· The executive loop finishes loading installed software interfaces
· The OS then presents itself to the user for command.
Depending on what OS is installed; you'll eventually see the User Interface that allows you to command the OS through the human designed I/O devices recognized by the computer during boot (Keyboard, Monitor, etc).
The OS is running in a loop that services hardware interrupts as they come in. When you press a key on your keyboard, the special purpose computer in the keyboard sends a hardware interrupt telling the computer there is something coming in that needs attention. The operating system gives the driver associated with that device time on the CPU. That driver uses the BIOS to reach out to the device and accept what it needs to send. What the device sends is loaded into a buffer in RAM that becomes available to the OS and is then manipulated in whatever way the OS is programmed to interpret that data.
So, BIOS is the low level interface software running on your machine. The OS (like DOS) is higher level software running on the machine that uses BIOS to interface with the hardware, which you are using to control the OS.
Only if the processor has special 64-bit extensions, known as AMD64 or EM64T. Certain Pentium 4 processors, all Core 2 processors, and all AMD Athlon 64 processors have these extensions, and can thus run 64-bit operating systems and programs.
Does the CPU work with zeros and ones?
Yes, when it gets down to the basic data unit it's all about decoding and processing zeros and ones.
What is the duration of single clock cycle in 3-GHz processor?
1/3,000,000,000th of a second. One three-billionth of a second. Isn't that staggering? A Hertz is a frequency that measures per-second frequency. A Kilohertz (Hardly used) is 1,000Hz, a Megahertz (Not used often in computing anymore) is 1,000,000Hz, and a Gigahertz (Hello today's computers) is 1,000,000,000Hz.
It blows my mind that numbers like this are possible, how about you?
How an ALU differentiate between arithmetic and logic?
It doesn't have to. The ALU is given one or two inputs and is told what operation to perform on them. It has no need to figure out whether that operation is arithmetic or logic, since each individual operation will be different anyway.
What still uses 8 and 16 bit processors?
Embedded processors still use 8 and 16 bit, especially if it's legacy hardware being supported. General purpose desktops have been 32 or 64 bit for awhile.
How do wireframes and rendering and ray tracing apply to 3D graphics?
how wireframes, rendering, and ray tracing apply to 3-D graphics
Can an Emachines w3622 handle a dual core processor and what is the best video card it can handle?
The W3622 cannot handle a dual core processor, at least not a Wolfdale. I know from first-hand experience.
The W3622 CAN handle any video card you throw at it that goes in the PCI-express x16 slot (pretty much every video card out right now).
Write an assembly language program to print a to z on screen?
write a program to print A to Z on screen in c?
Is a personal computer and microcomputer the same?
No.
- a microcomputer is any computer implemented with a microprocessor
- a personal computer is a type of microcomputer designed for personal use (i.e. the set of personal computers is a subsetof the set of microcomputers)
How many colors are possible if 24 bits per pixel is used?
One byte For each primary color results in 256 different intensity levels for each primary color. Thus a pixel can take on a color from 256X256X256 or 16.7 milion possible choices.
If 1 bit = 256 Color Approximately.
Then in 24 bit = 256 X 24 = 6144 color Approximately.
Answer is Given By Pranjal Nath From Assam
Bsc It(5th Sem) From Kuvempu Univercity. India.
How can you increase the port of a microprocessor?
hi,
dear u can increase the i/p, o/p number of ports by interfacing it with chip 8255,, that's the main idea, further how to interface it with the processor (preferably 8086),,,u must have a look of configuration and working of 8255,, for that you can chek this follow this link
http://www.scribd.com/doc/24040301/8255-Programmable-Peripheral-Interface
Regards: Badeekh Akbar.
The Core i7-920 runs on the LGA 1366 socket, with a clock speed of 2.67 GHz and a power consumption of 130 watts. A recommended replacement is the Core i7-950, at about $300 from Newegg. It has a 3.06 GHz clock speed and a power consumption of 130 watts, which makes it an ideal replacement for your i7-920.
How your CRT monitor is recycled?
They take them apart and then melt down the parts for lead and copper.
What companies manufacture microprocessors?
This is a list of companies who manufactured processors sometime or another. Some of these companies aren't manufacturing processors currently.
Though Intel, and AMD has a huge market share of microprocessors required for home/personal computers, Zilog stays in the background. Zilog manufactures processors for other equipments like remote controls, microwave ovens, mobile phones, PDA's, and similar.
PowerPC is a RISC architecture created by the 1991 Apple-IBM-Motorola alliance, known as AIM, from March 1994 until August 2006.
The following list is in alphabetical order:
1 AMD
2 ARM
3 Digital Equipment Corporation
4 Elbrus
5 Fairchild Semiconductor
6 Freescale Semiconductor (former Motorola)
7 Hewlett-Packard
8 IBM
9 Intel
10 MIPS Technologies
11 National Semiconductor
12 NEC
13 NXP (former Philips Semiconductors)
14 SPARC
15 Texas Instruments
16 VIA
17 Western Electric
18 Zilog
*For the MCU (Micro Controller Unit) that is also a small computer on a chip, known manufacturers is: MicroChip for the PIC MCU, Intel for 8085, Atmell, Dallas and many more.
Where can one find a list of microprocessors online?
To find a list of microprocessors online one can try Wikipedia. Other online sites that would be helpful are: CPU Data, CPU World, Bookrags and Princeton.
