A:The key advantage of a wireless microphone is that it gives greater freedom of movement. A notable disadvantage of a wireless microphone is that its operation time is limited by battery life. Compared to an ordinary condenser microphone, a wireless microphone runs on batteries that are greatly drained by the transmitting circuitry.
A:The iPod, a digital music player, works by storing audio and video files on a hard drive. A graphical menu system allows users to access and play files. The device integrates with iTunes software on computers to back up files and purchase new media from the iTunes store online. Headphones are needed to hear audio on certain models of iPods, as of 2014.
A:Sound sensors work by detecting differences in air pressure and transforming them into electrical signals. Sound sensors such as microphones usually have built-in amplifiers that increase the strength of the incoming signal.
A:A radio does not have the same advantages as other means of communication and entertainment such as the television and the Internet. It lacks visual appeal as no pictures emanate from a radio. A radio signal has limited strength.
A:Transistors function as current amplifiers or binary switches. With amplification, a small current controls a gate for a greater current. As switches, a 5-volt threshold (gate open) equals binary digit one, less than 5 volts (gate closed) equals binary zero.
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 difference between megabytes and gigabytes is the number of bytes that make up each unit and the amount of data they hold. A megabyte holds a million bytes, or about 1,000 kilobytes. A gigabyte holds about a billion bytes, or around 1,000 megabytes.
A:There are many advantages and disadvantages of HTML, including compatibility and difficulty of use. All Web browsers can read HTML files and webpages, but the language can be difficult to decipher, especially since one small typo could lead to a nonfunctioning webpage.
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:The Fibonacci sequence in Java is a set of codes in the programming language that generates numbers starting with 0, 1 and 1, such that any subsequent number is the sum of the previous two. The fourth number in the sequence is 2, the sum of 1 and 1.
A:To remove a hard drive from a tower computer, users need to back up their data, open the computer case, locate the hard drive, disconnect it by removing the IDE ribbon cable and the power computer and take the drive out. Users should make sure the computer is turned off, while performing the removal.
A:Computer limitations and capabilities are purely controlled by programming, user input and current advances in computer technology that limit hardware. The main limit to computers is that user input is needed for the performance of tasks because computers are not self-actualizing. Self-actualization is necessary in achieving artificial intelligence.
A:A computer-controlled telescope is a regular telescope that has been mounted to a motorized platform. This platform gradually moves through the observation period to compensate for the apparent motion of the sky. The exact path the telescope follows has to be programmed into the controlling computer.
A:The refresh button tells the Internet browser to reload the current website. It requests the entire page again from scratch. While refresh buttons were often necessary in the past, modern websites typically update information without requiring a manual refresh.
A:The basic difference between analog and digital computers lies in the different approaches they take to handling data. Analog computers are able to deal with continuously varying inputs for complex phenomena such as voltage changes and temperature fluctuations. Digital computers must have their inputs reduced to a simple binary language in order to accurately model the world.
A:Enable a wireless connection by pushing a hardware button on the device and then activating the computer's wireless software on Microsoft Windows laptops. After the wireless hardware is ready, select a wireless connection from the menu of choices.
A:CDs and DVDs that have already been burned with music and other data can still accommodate more files, but only if they are configured as multi-session discs. Burning additional music to a multi-session disc requires that the disc has remaining free space.
A:You can make a bootable USB using the Windows command line. Creating a USB boot drive varies with different operating systems, so check with the instructions for your operating system if you use something other than Microsoft Windows.
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:With a PC, if a hard drive failure is imminent, the user typically needs to replace it after creating a set of recovery discs and backing up personal files to another hard drive or USB storage device. After installing the new drive and performing system recovery, the OS should be loaded. Personal files can be uploaded to the new hard drive after recovery.
A:There are two main functionality differences between RAM and flash memory: RAM is volatile and flash memory is non-volatile, and RAM is much faster than flash memory. RAM stands for Random Access Memory.
A:The number of pictures that a 4GB memory card holds is directly related to the size of the pictures, but it generally has the capacity to store 1,140 photos that are 10 megapixels. This figure is based on the fact that 1 megapixel equals about 1,000,000 pixels, that 1MB is equal to about 1,000,000 bytes and 1GB equals about 1,000MB.