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Computer Hardware

Computer hardware is a general term used to refer to all the physical parts of a computer. Internal hardware devices include hard drives and motherboards, while external hardware devices include monitors, mice, keyboards, and printers.

11,849 Questions

What is the best mac laptop out right now?

The "best mac laptop" can depend on when you need it for.

The MacBook Air might be best for someone traveling light, or the MacBook Pro might be best for someone who wants a powerful laptop, while the MacBook could be best for someone on a budget.

What is a Timeline for computer hardware evolution?

* 1937 - John V. Atanasoff designed the first digital electronic computer * 1939 - Atanasoff and Clifford Berry demonstrate in Nov. the ABC prototype * 1941 - Konrad Zuse in Germany developed in secret the Z3 * 1943 - In Britain, the Colossus was designed in secret at Bletchley Park to decode German messages * 1944 - Howard Aiken developed the Harvard Mark I mechanical computer for the Navy * 1945 - John W. Mauchly and J. Presper Eckert built ENIAC at U of PA for the U.S. Army * 1946 - Mauchly and Eckert start Electronic Control Co., received grant from National Bureau of Standards to build a ENIAC-type computer with magnetic tape input/output, renamed UNIVAC in 1947 but run out of money, formed in Dec. 1947 the new company Eckert-Mauchly Computer Corporation (EMCC). * 1948 - Howard Aiken developed the Harvard Mark III electronic computer with 5000 tubes * 1948 - U of Manchester in Britain developed the SSEM Baby electronic computer with CRT memory * 1949 - Mauchly and Eckert in March successfully tested the BINAC stored-program computer for Northrop Aircraft, with mercury delay line memory and a primitive magentic tape drive; Remington Rand bought EMCC Feb. 1950 and provided funds to finish UNIVAC * 1950- Commander William C. Norris led Engineering Research Associates to develop the Atlas, based on the secret code-breaking computers used by the Navy in WWII; the Atlas was 38 feet long, 20 feet wide, and used 2700 vacuum tubes * 1951 - S. A. Lebedev developed the MESM computer in Russia * 1951 - Remington Rand successfully tested UNIVAC March 30, 1951, and announced to the public its sale to the Census Bureau June 14, 1951, the first commercial computer to feature a magnetic tape storage system, the eight UNISERVO tape drives that stood separate from the CPU and control console on the other side of a garage-size room. Each tape drive was six feet high and three feet wide, used 1/2-inch metal tape of nickel-plated bronze 1200 feet long, recorded data on eight channels at 100 inches per second with a transfer rate of 7,200 characters per second. The complete UNIVAC system weighed 29,000 pounds, included 5200 vacuum tubes, and an offline typewriter-printer UNIPRINTER with an attached metal tape drive. Later, a punched card-to-tape machine was added to read IBM 80-column and Remington Rand 90-column cards. * 1952 - Remington Rand bought the ERA in Dec. 1951 and combined the UNIVAC product line in 1952: the ERA 1101 computer became the UNIVAC 1101. The UNIVAC I was used in November to calculate the presidential election returns and successfully predict the winner, although it was not trusted by the TV networks who refused to use the prediction. * 1954 - The Sage aircraft-warning system was the largest vacuum tube computer system ever built. It began in 1954 at MIT's Lincoln Lab with funding from the Air Force. The first of 23 Direction Centers went online in Nov. 1956, and the last in 1962. Each Center had two 55,000-tube computers built by IBM, MIT, AND Bell Labs. The 275-ton computers known as "Clyde" were based on Jay Forrester's Whirlwind I and had magnetic core memory, magentic drum and magnetic tape storage. The Centers were connected by an early network, and pioneered development of the modem and graphics display.

Anti-static wrist straps and mats use tiny to prevent ESD?

Anti-Static Wrist Straps and mats are worn when, people need to use any tool or part of body to touch an electronic internaly. The wrist bands and mats have metal on the inside and sometimes outside to absorb the static electricity from your body. They must be connected to some kind of grounding object (usually via gator clamp) like a metel pole, power supply, ect....

If someone where not to wear one of these and touch a static or electric sensitive object like a motherboard for a computer, the static from your body could ark (jump) to the motherboard and couse it to fry or burn up.

What is static converter can a power supply of computer is static converter?

A single phase supply can operate a three phase motor with a static converter. No a power supply of computer cannot be fed through the static converter.

How do you use a PC power supply for a car amp?

You will need old comp power supply.

+12 V is on YELLOW wires.

-(minus) or ground is BLACK

If you have ATX power supply (that one without wires going to power switch on front - all PC now have ATX) you have to short GREEN and BLACK on main (the biggest plug to start power supply.

So use any pair black/yellow to power car amplifier.

Do you need the ground prong for a computer cord?

The ground prong is connected to the computer chassis, including the outside of the power supply module. This is a safety feature to ensure that the metal case of the computer and power supply never becomes dangerously electrified in the event of a loose wire.

Modifying the power cord not to have a ground prong would violate electrical codes intended to prevent accidental electrocution. That said, the ground prong is not essential for the normal operation of the computer, and the computer will still function without it. Proceed at your own risk.

What is interrupt flag?

Interrupt flags are used to interrupt the processor on what it is doing. When the flag is triggered the processor stops what it is doing attends what the flag wants to get done and once that is done it goes back to what it was doing. It is very useful for detect bug.

What are tightly and loosely coupled cluster systems?

Tightly coupled clusters are a group of machines that are largely dependent on each other. They are often used when latency is an important factor in the application. For example, a web cluster is often a tightly coupled cluster as the web servers/application servers require quick and consistent access to a shared storage system (network filesystem or database).

Loosely coupled clusters are a group of machines (or groups of groups) which can operate independent of each other. Communications between nodes (or subclusters) is often done via a queuing system.

Can you change the operating system on a pocket PC?

Most of them can. Though usually your breaking a warranty, and you will also find that its more of a "hack", as in, there is no official instructions on how to do it (its quite possible you will be told it cant be done - to stop you from playing around with it too much). Some devices will lock up on you, (like the PSP) and then you have to figure out how to unbrick it. But for the most part, 'yes', you should be able to change your OS.

Is Norton Antivirus a good thing to have on computer?

Norton is the best protection software currently in shops. Maybe Antivirus would not be the best but, Norton 360, which is the best of their products is definetly good for your computer. It will immediately tell you if you have a threat on your computer and it will automatially update itself to the latest version. Avast is one of the worst and cheapest security systems that is used, it causes pop-ups constantly and will not stop threats coming to your computer.

Why wouldn't The Sims one work on my gateway laptop?

I am not entirely sure, but I do know that laptops don't normally play games very well, They do not have as big a memory as a desktop pcs, i have tried to play games on my laptop and have been unsucessful, but my laptop is 10 years old.

What are Vietnams three cores?

There were four corps; officially called Military Regions I, II, III, and IV. MR-1 covered Da Nang up to the DMZ, and is often referred to as "I Corps." II Corps (MR-2) was the largest and covered the Central Highlands (containing Pleiku and Ahn Khe). III Corps was the most important and had the bulk of the US units surrounding it, the capital; Saigon. Below Saigon was the Mekong Delta...IV Corps...swamps and muddy canals, mud and more canals...and incredibly humid and hot. IV Corps was VC country, probably no one ever saw an NVA there. III Corps had so many allied forces within it, units kept bumping into each other when operating in the field. II Corps was the beginning of NVA country, rarely were there any VC units there...and a fairly dangerous place; the NVA seldom ran; they held their ground. I Corps was simply "Hot" (dangerous); a contested place between the NVA and US units.

How fix and locate ecu or ignition computer for 1993 mercury cougar XR7?

i think the ECU is under the dash kinda to the left (if looking up at it) of the steering wheel.

Which way to connect a cardbus in a Thinkpad 380ED PCMCIA slot?

Hello, the only way to connect a cardbus pcmcia-card to a 380ED is to attach the thinkpad to a "enhanced port replicator" which has 4 slots for pcmcia cards cardbus-type.I´ve tried this and it works fine. Look in eBay for the port replicator(docking station).

From where can you restore permanently deleted files and folders of recycle bin?

you cant sorry

Additional answer

It might be possible, because when you delete a file it doesn't disappear off the hard disc, it simply has its filename altered slightly so that it no longer appears in any lists and the space it occupies on the disc is used by other files when thery are saved. So there is a time between deletion and being overwritten when it could be restored, if it can be found. There is software available which will try to do this. Google for it.

Explain the difference between page and segment?

In segmentation, the address space is typically divided into a preset number of segments like data segment (read/write), code segment(read-only), stack(read/write) etc. And the programs are divided into these segments accordingly. Logical addresses are represented as tuple <segment, offset>.

While with paging, the address space is divided into a sequence of fixed size units called "pages". And logical addresses take the form of a tuple <page, offset>.

Each of these techniques offer several benefits e.g., segmentation offers better security since the segments are pre-defined and we can avoid spurious reads/writes at the time of address translations etc.

On the other hand, paging helps reduce fragmentation and ensures better memory management.

So, most modern operating systems employ a combination of both these techniques for their memory management.

Who makes Unix servers?

Servers capable of running a variant of Unix are manufactured by many companies, including Sun Microsystems, IBM, Hewlett-Packard, Dell, and Apple.

Your dell latitude D600 is reading Modular bay cannot be identified?

This error message typically indicates an issue with the optical drive or battery connected to the modular bay on your Dell Latitude D600. Try reseating the devices in the modular bay to ensure they are properly connected. If the issue persists, you may need to replace the faulty device or seek technical support.

What changes must be made to a 3-bit counter to make it a 4-bit counter?

One jk flip-flop with j=k=1 should be added to the system so that it's modulus becomes 16 instead of 8.

How much did it cost to start Microsoft?

Bill gates started his business by creating a DOS computer to sell to IBM for 50,000. His initials start up mpney isn't known

Inventor of series circuit?

No one knows, but I have a theory. I think maybe Elijah Alexander Smalls III did because Thomas Edison was to busy making the light bulb, so Elijah started working on series and parallel circuits. Another reason I think that is because they were at one time working together to make and improve the light bulb. It's just a theory, but it's a good one!