Many types of mobile computing have already been introduced in the market since 1990. Some of these are:
Laptop computer
Subnotebook
Personal digital assistant (PDA)
Portable data terminal (PDT)
Mobile data terminal (MDT)
Tablet personal computer
Smartphone
Subnotebook
Personal digital assistant (PDA)
Portable data terminal (PDT)
Mobile data terminal (MDT)
Tablet personal computer
Smartphone
A laptop computer, or simply laptop (also notebook computer or notebook), is a small mobile computer, which usually weighs 2.2-18 pounds (1-6 kilograms), depending on size, materials, and other factors. As personal computers, laptops are capable of the same tasks as a desktop PC, although they are typically less powerful for the same price. They contain components that are similar to their desktop counterparts and perform the same functions, but are miniaturized and optimized for mobile use and efficient power consumption. Laptops usually have liquid crystal displays and most of them use different memory modules for their random access memory (RAM), for instance, SO-DIMM in lieu of the larger DIMMs. In addition to a built-in keyboard, they may utilize a touchpad (also known as a trackpad) or a pointing stick for input, though an external keyboard or mouse can usually be attached.
A subnotebook is a small and lightweight portable computer, with most of the features of a standard notebook computer but it is either substantially smaller or lighter. As opposed to palmtop portables running Operating Systems like Windows CE, a subnotebook will run full versions of Windows or Linux.
Subnotebooks are generally smaller than a laptop computer, but larger than handheld computers and ultraportables. They often have screens that are 10.4" (diagonal) or less, and weigh less than 1 kg; as opposed to full-size laptops with 12" or 15" screens and weighing 2 kg or more. The savings in size and weight are usually achieved partly by omitting ports and/or have removable media/optical drives; subnotebooks are often paired with docking stations to compensate.
Personal digital assistants (PDAs) are handheld computers that were originally designed as personal organizers, but became much more versatile over the years. PDAs are also known as pocket computers or palmtop computers. PDAs have many uses: calculation, use as a clock and calendar, playing computer games, accessing the Internet, sending and receiving E-mails, video recording, typewriting and word processing, use as an address book, making and writing on spreadsheets, use as a radio or stereo, and Global Positioning System (GPS). Newer PDAs also have both color screens and audio capabilities, enabling them to be used as mobile phones (smartphones), web browsers, or portable media players. Many PDAs can access the Internet, intranets or extranets via Wi-Fi, or Wireless Wide-Area Networks (WWANs). One of the most significant PDA characteristic is the presence of a touch screen.
A Portable Data Terminal, or PDT, is an electronic device that is used to enter or retrieve data via wireless transmission (WLAN or WWAN). They can also serve as barcode readers, and they are used in large stores, warehouses, hospitals, or in the field, to access a database from a remote location. PDT's frequently run wireless device management software that allows them to interact with a database or software application hosted on a server or mainframe computer
A mobile data terminal (MDT) is a computerized device used in police cars, taxicabs, courier vehicles, service trucks, commercial trucking fleets, military logistics, fishing fleets, warehouse inventory control, and emergency vehicles to communicate with a central dispatch office. Mobile data terminals feature a screen on which to view information and a keyboard or keypad for entering information, and may be connected to various peripheral devices. Standard peripherals include two-way radios and taximeters, both of which predate computer assisted dispatching. MDTs may be simple display and keypad units, intended to be connected to a separate black-box or AVL (see below) computer. On the other end of the spectrum, MDTs may contain full, PC-equivalent hardware. The function and programmability of the devices is similarly broad.
A tablet PC is a notebook- or slate-shaped mobile computer. Its touch screen or digitizing tablet technology allows the user to operate the computer with a stylus or digital pen, or a fingertip, instead of a keyboard or mouse. The computer is linked to a network using a wireless link. The form factor offers a more mobile way to interact with a computer. Tablet PCs are often used where normal notebooks are impractical or unwieldy, or do not provide the needed functionality.
A smartphone is a full-featured mobile phone with personal computer like functionality. Most smartphones are camera phones that support full featured email capabilities with the functionality of a complete personal organizer. An important feature of most smartphones is that applications for enhanced data processing and connectivity can be installed on the device[1], by contrast to regular phones which support sandboxed applications. These applications may be developed by the manufacturer of the device, by the operator or by any other third-party software developer. "Smart" functionality includes any additional interface including a miniature QWERTY keyboard, a touch screen, or even just secure access to company mail, such as is provided by a BlackBerry.
But, are the above devices for you? The answer could either be yes, no, or it depends. If your job requires you to travel a lot, then these devices are of great help.
No comments:
Post a Comment