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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
How do you burn files into a blank CD?
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ET6 stands for Easy-Tune 6 and is a program to overclock certain motherboards
Instruction Set. ________________________________________ Addressing modes. TBD ________________________________________ Data movement. LDS Loads data from D memory in to given register. The address is specified by a second register. The data read is sign extended if necessary to fill the destination register. Source data can be 8, 16, 32 or 64 bits wide (up to data width of processor variant). The width is specified by a trailing B, W, L and LL respectively. LDZ As LDS but the data is not sign extended but zero padded to fill the destination register. LDIS Loads a constant into a given register. The four data widths of LDS are supported. Byte data is encoded within the instruction word, the others have the constant data read from the P memory in the locations following the instruction. LDIZ As LDIZ but the data is zero padded to fill the destination register. STR Stores the contents of a given register to the address in D memory given by a second register. PUSHREG As STR but always transfers the whole register contesnts and then increaments the destination address to the next appropriately sized location. POPREG As PUSHREG but the data is read from the D-memory into a register and the source address is decremented. COPY Copies the contents of one register to a second register. ________________________________________ ALU Instructions. ADD Adds the two given registers together and stores the result in the given destination register. ADDC Adds the two given registers together with the carry status bit and stores the result in the given destination register. SUB Subtracts a given register from another and stores the result in the given destination register. SUBC Subtracts a given register from another and the carry status bit and stores the result in the given destination register. CMP Compares two given registers. This is exactly the same as SUB, but the result of the calculation is not stored, just the status bits are updated. CMPC The same as CMP but the subtraction includes the carry status bit as in SUBC. This can be used to compare values greater than the width of the registers. AND Performs the bit wise AND upon the two registers given and puts the result in the destination register. OR Performs the bit wise OR upon the two registers given and puts the result in the destination register. XOR Performs the bit wise exclusive-OR upon the two registers given and puts the result in the destination register. NOT Performs the bit wise inversion of a register. NEG Negates the contents of a given register. Status Bits. Four status bits are maintained by the ALU. These are: • Zero(Z) Result is equal to zero. • Negative(N) Result is negative. • Carry(C) Result of an arithmetic operation produces a carry from the MSb. • Overflow(O) Result is too big for the destination register and has been truncated. ________________________________________ Jumps and Halts. Delay slots. Due to the program counter pipeline a delay slot is required after each instruction that changes the program counter. This delay slot is one instruction that is executed before the change to the program counter takes place. The delay slot instruction cannot be any instruction that changes the the program counter (can't handle nesting them) or any instruction that is not fully described in one word from the program memory. JMP Loads the program counter from the given register and execution continues from here after the delay slot instruction. JMPI As JMP but the new value of the program counter is provided in the P-data word following the instruction. JMPI.R As JMP but the new program counter value is calculated from the current value of the program counter added to the 12 bit value given (sign extended to 16 bits). JSR As JMP but the program counter is stored on the stack (so we can come back again with the RTS instruction). JSRI As JSR but the new value of the program counter is provided in the P-data word following the instruction. JSRI.R As JSR but the new program counter value is calculated from the current value of the program counter added to the 12 bit value given (sign extended to 16 bits). RTS Return from subroutine. The program counter is fetched from the stack and execution continues from here after the delay slot instruction. HALT Stops the program execution until awoken by an external 'wake up' signal or an interrupt. ________________________________________ Conditional Branches. The conditional branches all operate on the four status bits maintained by the ALU. These are masked by the four corresponding condition bits within the brach instructions and the branch is performed if any bits remain set after they are masked. The branch instructions use a delay slot for the next instruction to allow the program counter pipeline to catch up with a possible change. BRA Branch to address supplied by contents of the given register if the condition are met. BRA.R Branch to an address defined by the sum of the program counter and the immediate data if the condition is met. The immediate data is an 8 bit number that is sign extended to 16 bits before being added to the program counter. Note the program counter holds the address of the next instruction (the delay slot instruction) and it is to this value that the relative branch is performed. ________________________________________ Interrupts. LDIRQ Loads the interrupt handler register from the given register. This address is where the interrupt handler executes from. RTI Return from interrupt. The same as RTS but the processor also switches from using its shadow registers used during interrupts. ENIRQ Enable interrupts. DSIRQ Disable interrupts.
Per "Guide To Managing and Maintaining Your PC, Seventh Edition" text book by Jean Andrews:
(Page 707)
Device Manager reads data from the HKLM\Hardware (hkey_local_machine) key to build the information it displays about hardware configurations.
There is no such thing as 'watts per hour'. You may be thinking of 'watt hours', which is a unit for measuring energy? If so, since a kilowatt hour is equal to a 'unit' (short for 'Board of Trade Unit'), then a megawatt hour is equal to a thousand units.
Hardware is a physical computer object eg mouse keyboard mother board etc
Unlike software that needs hardware to work
What is a relationship between Computer application Computer operating system and Computer Hardware?
Computer Hardware consists of the physical components that make up a computer. Some examples are and Microprocessor, a Hard Drive, or a Motherboard.
Computer Software consists of applications or programs that the user runs on a computer, such as a word processor or a video game.
An Operating System is a specific piece of software that allows other software to manipulate computer hardware to achieve a desired effect. Some Operating Systems are Microsoft Windows, Unix/Linux, or Apple OS
Basically the three interact as follows:
Hardware <-> Operating System <-> Software
(<-> specifies an interaction between two components.)
In addition computer hardware deal with different devices that interact into the computer software then it show the capacity and data of the applications while the operating system it is the combination of performance which spreadout to access each other components.
And stop cheating... Thankyou.
How do you design a decimal counter using j-k flip-flop?
Since it is a 3 bit counter( max state here is 6<8 i.e. 2^3) so 3 FF would be used here.Name these three FF A, B,C (u can assume ny other name).
Prepare a state table- here we have 2 count from state 0 to 1, 1(001 in binary) to next state(010), then from 2(010) to 4(100) , then from 4(100) to 5(101), then from 5(101) to 6(110).
After u prepare the state table next step is to prepare the excitation table from this state table.Generally RS FF is used to design the sequence with even no. in the end, for odd we gen' use JK FF's.
Using the present state as o/p transitions, and the basic excitation table for rs ff prepare the table.( this can be done here like ABC changes value as 000 to 001 write the value for Ja as X and Ka as 0, same can be done for Jb , Kb, as well as Jc, Kc.)
Using excitation table prepare K-maps for Ja , Ka , Jb ,Kb , Jc , Kc .From these Kmaps obtain simplified Boolean expressions.
And these boolean expressions can be used to prepare complete Logic.
MB - Megabyte
Mb- Megabit
mb- NO SUCH THING
KB- Kilobyte
kb- Kilobits
8Mb = 8000kb
Can you connect the Cricket wireless USB broadband to a wireless router?
The short answer is that you can bridge connections and all but its complicated and the way my cricket works you would not want to connect a router of any kind. The speed is slow enough that i would not connect more than one computer even if its possible. What a pessimistic answer. Answer:
The way it was made should tell you that it's NOT recommended and probably difficult or nearly impossible to use with a router! It uses XP's dial-up networking (or better known as RAS) to make a connection to the internet... since the router doesn't have RAS, the modem would have NO way to make a connection without a computer! So, in essence, the only way is to go through the computer first... then route the traffic to the router or use ICS on your network... either is not really recommended as this modem isn't really fast enough to support more than one computer, as mentioned. So you should heed the answer! If you are only connecting to one computer, then just use ICS (Internet Connection Sharing)... be sure to have good firewalls on BOTH computers! More than one computer using the internet connection is NOT recommended as performance will suffer greatly... it's also NOT recommended connection for gamers and people using p2p, etc. Look elsewhere if you are a heavy duty user! I connected it to wireless router. You make good points about it not being made for that purpose but it's not "nearly impossible" It was very simple. Yes you have to go through the computer first, but NO it doesn't make performance suffer. Cricket broadband isn't all that great performance wise PERIOD. But if you already have it you may as well get the same inconsistant service on ALL your comp. for the same price you were paying to have it on 1 comp. My house is filled with "v-idiot gamers" and"shySpace" users and we don't have any problems.
Mainframes are computers used mainly by large organizations for critical applications, typically bulk data processing such as census, industry and consumer statistics, ERP, and financial transaction processing.
Where can you purchase cheap CD-R discs?
Cheap Compact Discs, or CD's for short may be purchased from any the following top websites: Play, Amazon, eBay, Tower and CD Universe. There are even more web stores online, but there are too many to name them all.
What pointing device allows you to control the pointer by moving the entire device around the desk?
compass
3.06 GHz is equivalent to 3,060,000,000 Hz, or Hertz, named after Heinrich Hertz. Hz is the standard unit of measure for frequency, or the number of cycles per second. Hz are commonly used as a measure of the clock speed in a CPU.
Can you run Windows 7 on a Dell Dimension e521?
I'd say no right now ...
I have tried to get the e521 working without success using the RTM version of Windows 7. When copying files, the system generally freezes up (no mouse, no keyboard, no activity at all). I then need to do a hard-reboot. This is using a new hard disk, and a clean install of Win7. I have also tried updating drives from Windows Update, and using available Vista drivers. Nothing works... This same system was up for months without any crashes using Windows XP and is going back to XP.
If Microsoft fixes whatever issues it has with this hardware, I'd then say yes with the memory caveat listed below.
Yes. If yours was equipped with 512 MB of RAM, you will probably want to upgrade it to at least 1 GB (the machine supports up to 4 GB).
ADDED 23 Jan 2010: It looks like a definite NO. When I ran the Dell-branded Win 7 Upgrade Assistant it clearly stated that the E521 is not compatible with Windows 7 (although it does meet the hardware requirements) and refused to continue with the Upgrade Installation that i wanted. I doubt if Microsoft has any issues to fix. It is Dell that has failed to release suitable drivers for their E521, or for other Dimension PCs.
COMMENT 10 April 2010: I (not original author of this reply) am running Windows 7 64-bit on my Dimension E521 (4MB memory, bios 1.1.4) works great and had no problem installing.
Comment 25 July 2010: (not original author) I am also running Win 7 (64-bit) on my Dimension E521 and have been for about 6 months. Technically it was an upgrade from XP, but in reality it is a clean install and requires you to reload all of your programs, update drivers, etc. I recommend upgrading the RAM to 4GB, it will run noticeably faster. Also, the Aero user interface has somewhat limited functionality with the stock video card, but nothing major, just some limited visual effects. Upgrading the video card will fix this, but that may also require upgrading the power supply.
What are the five voltages produced by a common PCs power supply?
+3.3V +5V +12V -12V +5VSB
However it's really only three .
What is the purpose for data bus?
A data bus is simply a communication system that moves data around within a computer. Think of it like an actual public bus system. The data bus "picks up" data that needs to be transferred to some other part of the computer and "drops them off there".
How many pictures will a 4MB memory card hold on a 9MP camera?
Surprisingly, my Canon Ixus 75 (7.1 megapixels) seems to think it can take 1271 pictures on a 4GB card at the highest quality level.
For any thing you need to know about number of pictures a card can hold or amount of video it can record, go to:
http://www.picstop.co.uk/pdf/image_count.htm
S-Video ports and AVI ports are used to connect a computer to a monitor/television screen. S-video usually works with older television sets and some monitors. AVI used to be the most common way to connect a computer (desktop or laptop) to a monitor. Currently HDMI and DVI dominate the commercial market.
As for uses: people use them for dual/multi-monitor displays; to extend their workspace. You can also connect your laptop to a better monitor/television and then you can watch a video in better quality.
Hope this helped!
What is the difference between prepaid and postpaid?
Post paid:- In which we paid after use the service each end of the month Prepaid:-In which we paid before use the service. and pay when ever the credit ends.
Is a music keyboard an input or output device or both?
Generally, a MIDI instrument is an input device. It takes the musical data from the user who plays it. Playing the instrument sends input into the computer. However, depending on the instrument, such as if the instrument is standalone, it can possibly be used as an output device as well. Files stored on the computer could cause the instrument to play. So some are strictly input devices and some are I/O devices.
