计算机专业英语作业

计算机专业英语作业：1、请将视频“什么是电脑硬件”中所述内容用英文表示。

2、请将以下英文翻译为中文。

1）Plug and Play, sometimes, abbreviated PnP, is a catchy phrase used to describe devices that work with a computer system as soon as they are connected. The user does not have to manually install drivers for the device or even tell the computer that a new device has been added. Instead the computer automatically recognizes the device, loads new drivers for the hardware if needed, and begins to work with the newly connected device.For example, if you connect a Plug-and-Play mouse to the USB port on your computer, it will begin to work within a few seconds of being plugged in. A non plug-and-play device would require you to go through several steps of installing drivers and setting up the device before it would work.While Plug and Play usually refers to computer peripheral devices, such as keyboards and mice, it can also be used to describe internal hardware. For example, a video card or hard drive may be a Plug and Play device, meaning the computer will recognize it as soon as it is installed. The only difference is that internal components usually require the computer to be turned off when they are installed, while external devices can typically be installed while the computer is running.2）What are some examples of computer peripheral devices?Answer:⏹ A computer peripheral, or peripheral device, is an external object that provides input and output for the computer.⏹Some common input devices include: keyboard, mouse, joystick, pen tablet, MIDI keyboard (musical instrument digital interface数码音响), scanner, digital camera, video camera, microphone.⏹Some common output devices include: monitor, projector, TV screen, printer, plotter, speakers.⏹There are also devices that function as both input and output devices, such as: external hard drives, media card readers, digital camcorders, digital mixers, MIDI equipment.⏹While these are some of the more common peripherals, there are many other kinds as well. Just remember that any external device that provides input to the computer or receives output from the computer is considered a peripheral.3）Binary is a two-digit (Base-2) numerical system, which computers use to store data and compute functions. The reason computers use the binary system is because digital switches inside the computer can only be set to either on or off, which are represented by a 1 or 0. Though the binary system consists of only ones and zeros, the two digits can be used to represent any number.4）There are many types of compact disks. One format is called CD-RWs. They can be recorded on and re-recorded on (rewritten on) as you would do with a floppy disk. Another format is the CD-ROM. The technology for recording on these disks is different form other CDs.5）Stands for "Read-Only Memory." Please do not confuse this term with RAM or a hard drive, as many people already do. ROM is memory containing hardwired instructions that the computer uses when it boots up, before the system software loads. In PCs, the instructions are read from a small program in the ROM, called the BIOS (Basic Input/Output System).6）disk driveA machine that reads data from and writes data onto a disk. A disk drive rotates the disk very fast and has one or more heads that read and write data. There are different types of disk drives for different types of disks. For example, a hard disk drive (HDD) reads and writes hard disks, and a floppy drive (FDD) accesses floppy disks. A magnetic disk drive reads magnetic disks, and an optical drive reads optical disks. Disk drives can be either internal (housed within the computer) or external (housed in a separate box that connects to the computer). Disk drives can be either internal (housed within the computer) or external (housed in a separate box that connects to the computer).7）removable disktype of disk drive in which hard disks are enclosed in plastic or metal cartridges so that they can be removed like floppy disks. Removable disk drives combine the best aspects of hard and floppy disks. They are nearly as capacious and fast as hard disks and have the portability of floppy disks. Their biggest drawback is that they're relatively expensive.8）serial portA port, or interface, that can be used for serial communication, in which only 1 bit is transmitted at a time. A serial port is a general-purpose interface that can be used for almost any type of device, including modems, mice, and printers (although most printers are connected to a parallel port).9）parallel portA parallel interface for connecting an external device such as a printer. Most personalcomputers have both a parallel port and at least one serial port.10）Pseudocode (derived from pseudo and code) is a compact and informal high-level description of a computer programming algorithm that uses the structural conventions of some programming language, but typically omits details that are not essential for the understanding of the algorithm, such as subroutines, variable declarations and system-specific code.11）2.5 Using Function KeysYour computer has 12 function keys, F1 through F12. The functions assigned to these keys differ for each application. You should refer to you software documentation to find out how these keys are used.The [FN] key provides extended functions for the notebook and is always used inconjunction with another key.Fn+F1 SleepThis function will put the E1245 notebook into sleep mode. The LCD will switch off and devices will switch to lower power mode.Fn+F2 Fan ControlThis function will enable or disable the Silent Fan function . This will enable the user to put the fan into quiet mode if the user needs the notebook o be quieter.Fn+F3 Mute V olumeThis function will mute the volume control in Windows and all sound output from the speakers will stop. Pressing this combination again will enable sound output.Fn+F4 LCD/Display-Out SwitchThis function will switch the display configuration for the E1425 -It will cycle between 3 modes depending on operation system settings. These 3 Modes are:LCD Only-Image on the E1425 LCDDisplay Only-Image on external monitorLCD+Display-Image on LCD and external monitor12）课本P89 EX.5 把下列短文翻译成中文。