A:Fifty decibels is the level of noise of a quiet conversation at home or a quiet stream. In comparison, the general base of 70 decibels is the noise level of a vacuum cleaner or of radio and TV audio.
A:In dealing with speaker wires, the positive speaker wire will be silver in color. This is only visible if the insulation is clear or see-through so that color can be distinguished. The negative wire will usually be copper in color for this same instance.
A:An MP3 player contains a number of critical components, and a single failure can cause it to stop functioning. According to Sony, The best way to test an MP3 player to see if it still works is to charge it.
A:Embedded software refers to computer programs that directly interact with hardware. These programs are typically built to perform a specific function or to make the hardware perform in a specific way, and several pieces of embedded software may be built into a single piece of hardware. Embedded software is an integral part of the hardware into which it is built.
A:Data compression is needed because it allows the data to be stored in an area without taking up an unnecessary amount of space. Data compression uses a series of algorithms to reduce the amount of real space that the data would normally take up.
A:The process of typing a subscript on a Mac differs depending on the application. Since Microsoft Word is the most widely used word processing application, the process is described for that application. To type a subscript into Word, press the Command button and the "=" keys on your keyboard simultaneously.
A:No machine can operate at 100 percent efficiency because some of the energy input will always be used to overcome the force of gravity and the effects of friction and air resistance. Even an optimally tuned engine heats up eventually, and that heat is thermal energy being lost.
A:A computer language translator is a program that translates a set of code written in one programming language into a functional equivalent of the code in another programming language. The different types of computer translators are interpreters, source-to-source compilers, standard compilers, decompilers, assemblers and disassemblers.
A:Remote controlled toys are typically controlled by a transmitter, which sends a signal over a frequency to the receiver that sits in the toy being controlled. The transmitter has a power source, usually a battery, which powers the transmitter.
A:There is no conclusive evidence to suggest that leaving a laptop on all of the time causes any damage to the system. The monitor or screen can be damaged by persistent images, but settings such as power-saving and screen-savers prevent this in long-term usage.
A:If everything on a computer screen has turned sideways, the culprit is likely to be someone attempting to pull a prank; a quick combination of keystrokes changes the orientation of a computer's screen. It is startling and disorienting to see the screen display turned sideways, but it does not mean that something terrible or irreparable has happened to the computer.
A:Microprocessors are used in servers, desktop computers, laptops and mobile devices. They are popular in embedded devices, which traditionally use microcontrollers. Microprocessors were named to set them apart from larger processors used in the middle of the 20th century.
A:Random Access Memory, or RAM, is used by computers to store and access information using a random order. This resource provides a temporary way for computers to process electronic data, while making computers more responsive and helping operate memory-intensive programs. RAM chips are only capable of storing and accessing information when electrical power is present.
A:The Michelangelo virus was a boot-sector computer virus that was spread through infected floppy disks. The virus copied itself if an infected floppy disk was left overnight inside a computer. At restart, the computer then booted up the floppy disk and copied the virus to the hard drive.
A:When a cell phone says that the "SIM card is full," this most likely this means that the SIM card has reached its maximum storage capacity. A user needs to delete contacts and text messages or upgrade to a larger SIM card for more storage space.
A:A gigabyte is much larger than a megabyte. According to the National Institute of Standards and Technology, there are 1000 megabytes in a gigabyte. However, in some cases, a gigabyte is defined as 1024 megabytes.
A:An industry standard 74-minute audio compact disk can hold 650 megabytes of data. Other industry standards are the 80-minute, 700 megabyte disks and the 21-minute, 185 megabyte disks. CDs with higher capacity, up to 890 megabytes, exist but don't conform to industry standards and may not work in all readers.
A:A LAN card connects a computer to a network, whether local or foreign. LAN cards typically connect to a computer's motherboard via a serial port. There are other varieties that connect via a SATA, eSATA or USB port.