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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 function of computer microphone?
the function of a microphone is to take your sound waves and translates it to appropriate machine readable for and the transmits it as an electrical pulses to the central processing unit for processing
Is a joystick hardware or software?
A joystick is what's known as a peripheral; it is plugged into the computer. A joystick is a piece of hardware.
Software, on the other hand, are the applications you run on your computer. For example, the web browser or music player.
An easy way to decide whether something is hardware or software is whether you can physically touch it; whether it exists in the real world.
A mouse is hardware, it is another peripheral plugged into the computer.
An instant messaging program is software, it exists only on the computer's system.
A computer that stores data in terms of digits (numbers) and proceeds in discrete steps from one state to the next. The states of a digital computer typically involve binary digits which may take the form of the presence or absence of magnetic markers in a storage medium (see memory), on-off switches or relays. In digital computers, even letters, words and whole texts are represented digitally. Unlike analog computers, digital computers can only approximate a continuum by assigning large numbers of digits to a state description and by proceeding in arbitrarily small steps.
What are the examples of peopleware?
what are the different examples of peopleware?
what is peopleware?
List and briefly define two approaches to dealing with multiple interrupts?
The discussion so far has only covered the occurrence of a single interrupt. Suppose, however, that multiple interrupts can occur. For e.g. a program may be receiving data from a communication line and printing results. The printer will generate an interrupt every time that it completes a print operation. The communication line controller will generate an interrupt every time a unit of data arrives. The unit could either be a single character or a block, depending on the nature of the communications discipline. In any case, it is possible for a communications interrupt to occur while a printer interrupt is being processed. Two approaches can be taken to deal with multiple interrupts. The first is to disable interrupts while an interrupt is being processed. A disabled interrupt simply means that the processor can and will ignore that interrupt request signal. If an interrupt occurs during this time, it generally remains pending and will be checked by the processor after the processor has enabled interrupts. Thus, when a user program is executing and an interrupt occurs, interrupts are disabled immediately. After the interrupt handler routine is completed, interrupts are enabled before resuming the user program and the processor checks to see if additional interrupts have occurred. This approach is nice and simple, as interrupts are handled in strict sequential order (Figure3.10 (a)). The drawback to the preceding approach is that it does not take into account relative priority or time-critical needs. For e.g. when input arrives from the communications line, it may need to be absorbed rapidly to make room for more input, If the first batch of input has not been processed before the second batch arrives, data may be lost. A second approach is to define priorities for interrupts and to allow an interrupt of higher priority to cause a lower-priority interrupt handler to be itself, interrupted. As an example of this second approach, consider a system with three I/O devices: a printer, a disk, and a communications line, with increasing priorities of 2, 4, and 5, respectively. A user program begins at t=0. At t=10, a printer interrupt occurs; user information is placed on the system stack and execution continues at the printer interrupt service routine (ISR). While this routine is still executing, at t=15, a communications interrupt occurs. Because the communications line has higher priority than the printer, the interrupt is honored. The printer ISR is interrupted, its state is pushed onto the stack, and execution continues at the communications ISR. While this routine is executing, a disk interrupt occurs (t=20). Because this interrupt is of lower priority, it is simply held and the communications ISR runs to completion. When the communications ISR is complete (t=25), the previous processor state is restored, which is the execution of the printer ISR. However, before even a single instruction in that routine can be executed, the processor honors the higher priority disk interrupt and control transfers to the disk ISR. Only when that routine is complete (t=35) is the printer ISR resumed. When that routine completes (t=40), control finally returns to the user program.
Is a printer considered hardware?
No, A Printer is a Peripheral.
- A Printer fits the description of a peripheral (anything that attaches to the host to increase the functionality of the host but is not independent of the host)
Why does a d-type flip flop need a transition gate on its clock input?
The D Flip-Flop takes the logic level of 'Data' to the output only on the rising edge of the clock pulse.
Without the transition gate: Since the clock pulse is a square wave (and is high for half a cycle, and low for the other half), the logic level at 'Data' could change while the clock pulse is high, causing the output to change before the next rising edge. This is not how a flip-flop operates.
The transition gate prevents this by converting the clock pulse into a very short 'blip' of a few nanoseconds, starting at the rising edge of the clock pulse, repeating on the next cycle. This means there is only a very small window where the clock is high, and the logic level at 'Data' can be taken to the output.
Interrupt initiated transfer and data transfer under program control?
Program control Interrupt:-Program interrupt can be described as a transfer of program control form a currently running program to another service program on a request generated externally or internally. After the service program is executed the control returns to the original program. It is imperative for the CPU to return to the same state that it was when interrupt occurred after the program interrupted and the service routine has been executed. The state of the CPU at the end of the executive cycle(when the interrupt is recognized )is determined from:1. The content of the program counter. 2. The content of all processor registers. 3. The content of certain status conditions.Interrupts can be classified into the major types as below:-1. External interrupts:- this is come from input output devices, from a timing device, from a circuit monitoring the power supply, or from any other external source. 2. Internal Interrupts:- this is arise when an instruction or data is used illegally or erroneously. These interrupts are also known as traps. 3.Software interrupts:-external and internal interrupts r occur in the hardware of the CPU. A software interrupt is initiated during execution of an instruction. Software interrupts is a special call instruction that behaves like an interrupt rather than a subroutine call. It can be called to function by the programmer to intitiate an interrupt procedure at any desired pointing the program.
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Raj Choudhary (kajla 9950645563)
What is electromechanical data processing?
computing devices based on relays, switches, clutches, odometer counters, etc. not electronics.
Why does the jumper fell heaver after it is washed?
The jumper probabaly retained water in the fabric and all the extra water makes it heavier. Once it dries it should feel the same.
They're are not related. Watts are measurement of power while Ohms are measurement of resistance. One watt equals one volt times one amp.
Where are Fuses in desktop computers?
There is at least 1 fuse in the power supply of a computer usually located at the back top of the computer case. If a short occurs in any of the computer hardware, this fuse will blow, preventing damage to the power supply.
Assuming you mean formatting as in preparing a disk for use, there are two main types of formatting. The first is a low-level or physical format, and the other is an upper level or logical format. A low-level format creates the tracks and sectors. A high-level format may clear the tracks and sectors, but often just verifies them, and it will add a file-system to the disk.
When you format a diskette, both types of formatting takes place. The drive lays down the tracks and sectors. While doing that, it verifies the newly created sectors, and then at the end of that, it creates the boot record and the two FAT tables.
Formatting a hard drive is much different from formatting a diskette. It is a three step process. In the old days, you had to first low-level format the hard drive. That required using either a program stored on the controller (and a weird Debug command sequence to access it) or a third-party utility. That is where the sectors are created, and you often had to type in a defect map so the drive would know where its bad spots were. Hard drives are not perfect, and if there are bad spots, you'd want to skip them and lay sectors past them. The second part of the step was to create a partition table. The third step was to run the Format program in DOS or Windows to do the higher level formatting.
However, modern hard drives come with a low-level format and refuse to let you low-level format them. It is physically impossible for them to correctly low-level format themselves, since by their design, factory equipment would be required. If you try to low-level format them, they will intercept the commands, pretend to low-level format, but only wipe the logical contents without touching the sector and track boundaries. So that means you can only partition them and do a high-level format.
What is the angle of the input shaft copared to the output shart to the bevel gear assembly?
the answer to what is the angle to the imput shaft compared to the outout shaft for the Bevel Gear Assembly is : the imput is in the output is out tada that simple!!
What is a Webcam? A webcam (also called web camera) can take videos and images, and then send them in real-time to another PC either through the internet or through a local network. Most webcams connect to the computer via the PS/2 or USB port. Wireless webcams connect via Bluetooth or Wi-Fi. Most webcams are capable of taking still images when offline.
Just to add to above, some webcams are built into the actual laptop or computer. It is sort of said above, but you can chat with webcams with another person who also has a webcam. I have even seen some people use them as security purposes.
Where is the AOSS button located on PS3?
The PS3 does not have an AOSS button. AOSS (AirStation OneTouch Secure System) is used for wireless setup of devices for your network. Your router will have a button on it for this. If it does not then it more than likely does not have the ability to set devices up in this manner.
To use this set up for the PS3 go to Settings - Network Settings - Internet Connection Setting - (Method) Custom - (Select Connection Method) Wireless- (WLAN Setting) Auto - AOSS. At this point the PS3 will tell you to push the button on the router and that you have two minutes or else the attempt to connect will stop.
The maximum number of devices that can connect to a single USB port is?
u can connect a 4 port adapter to a single usb port but if u are using all for ports u may experience slow data transfer
Is any DOS command to display the computer's serial number?
No, there is not any command since the serial number of the computer is decided by the computer manufacturer.
Edit: Sure there is. cmd-> "wmic bios get serialnumber"
What is the toll-free number for HP customer care in Canada?
HP Customer Care : 888-578-0333 Contact Support Number . Customer care
What is power Consumption of cisco 24 port switch?
That depends on the model of the switch, you can lookup the technical specs by doing a quick search at cisco.com.
