Characterstics of Laptop

Answer Portability is usually the first feature article mentioned in any comparison of laptop computers versus backdrop pcs. Physical portability allows that a laptop ordure be used in many places not single at home and at the office, but in like manner during commuting and flights, in coffee shops, In lecture halls and libraries, at clients spot or at a meeting room, etc. The portability feature offers several distinct advantages a.Productivity victimisation a laptop in places where a desktop PC cannot be used, and at times that would otherwise be wasted. For example, an office get toer Is managing inheritor e-mails during an hour-long commute by train, or a student doing his/her homework at the university coffee shop during a break amid lectures. b. Immediacy Carrying a laptop means having instant access to various Information, mortalal and work files. Immediacy allows better collaboration between coworkers or students, as a laptop can be flipped open to present a hass le or a solution anytime, anywhere. . up-to-date information If a person has more(prenominal) than one desktop PC, a problem of synchronization arises changes make on one computer ar not automatically propagated to the others. in that location argon ways to resolve this problem, Including physical transfer of updated files (using a USB winking memory stick or cdrs) or using synchronization software over the Internet. However, using a single laptop at two locations avoids the problem entirely, as the files exist in a single location and are always up-to-date. d.Connectivity A proliferation of WI-FI wireless profitss and cellular broadband information services (HSDPA, EVDO and others) combined with a near-ubiquitous support by laptops means that a laptop can have easy Internet and local network connectivity while remaining mobile. Wi-Fi networks and laptop programs are especially idespread at university campuses. former(a) advantages of laptops e. Size Laptops are smaller t han desktop pcs. This is beneficial when space is at a premium, for example in small apartments and student dorms.When not In use, a laptop can be closed and put away. f. abject role consumption Laptops are several times more power-efficient than desktops, A typical laptop uses 20-90 W. compared to 100-800 W for desktops. This could De partlcularly DeneTlclal Tor Duslnesses (wnlcn head nunareas 0T personal computers, multiplying the potential savings) and homes where thither is a computer running 2417 ( oftentimes(prenominal) as a home media legion, bring out server, etc. g. Quiet Laptops are often quieter than desktops, due both to the components (quieter, pokey 2. -inch hard drives) and to less heat production leading to use of a couple of(prenominal) and slower cooling fans. h. Battery a charged laptop can continue to be used in case of a power outage and is not affected by short power interruptions and blackouts. A desktop PC needs a UPS to handle short interruptions, blackouts and spikes achieving on-battery time of more than 20-30 minutes for a desktop PC requires a braggy and valuable UPS. i. All-in-One intentional to be portable, laptops have everything integrated into the hassis.For desktops (excluding all-in-ones) this is divided into the desktop, keyboard, mouse, display, and optional peripherals such as speakers. 2. Characteristics of Super information processing system A) A supercomputer is the fastest type of computer. Supercomputers are very expensive and are employed for specialized applications that require large amounts of mathematical calculations. The chief difference between a supercomputer and a central processor is that a supercomputer channels all its power into executing a few programs as fast as possible, whereas a mainframe uses its power to fulfill many programs concurrently.B) Supercomputers are used for risquely calculation-intensive tasks such as problems involving quantum automatic physics, weather forecasting , climate research, molecular modeling (computing the structures and properties of chemical compounds, biological macromolecules, polymers, and crystals), physical simulations (such as simulation of airplanes in wind tunnels, simulation of the detonation of thermonuclear weapons, and research into nuclear fusion), cryptanalysis, and many others. Some supercomputers have also been designed for very specific functions like cracking codes and playing chess mystifying Blue is a famous chess-playing upercomputer.Major universities, military agencies and scientific research laboratories appear on and make use of supercomputers very heavily. C) A supercomputer generates large amounts of heat and therefore must be cooled with complex cooling systems to correspond that no part of the computer fails. Many of these cooling systems betroth advantage of liquefied gases, which can get extremely cold. D) Another issue is the drive on at which information can be transferred or written to a stock aevlce, as tne speed 0T data transTer wlll Ilmlt tne supercomputers performance. Information cannot move faster than the speed of light between two arts of a supercomputer.E) Supercomputers consume and catch massive amounts of data in a very short current of time. Much work on external stock bandwidth is needed to ensure that this information can be transferred quickly and stored/retrieved correctly. 3. Characterstics of Main Frame Computer? a. modern-day mainframes can run multiple different instances of operating systems at the same time. This technique of realistic machines allows applications to run as if they were on physically distinct computers. In this role, a single mainframe can substitute higher-functioning hardware services available to conventional servers.While mainframes pioneered this capability, virtualization is now available on most families of computer systems, though not always to the same microscope stage or level of sophistication b. Mainframes ca n add or voluptuous swap system faculty without disrupting system function, with specificity and granularity to a level of sophistication not usually available with most server solutions. c. Modern mainframes, notably the IBM zSeries,System z9 and System ZIO servers, offer two levels of virtualization logical partitions (LPARs, via the PRISM facility) and virtual machines (via the zPvM operating system).Many mainframe customers run wo machines one in their primary data center, and one in their backup data center fully active, part active, or on standbyin case there is a catastrophe affecting the first building. Test, development, training, and production workload for applications and databases can run on a single machine, except for extremely large demands where the capacity of one machine might be limiting. Such a two- mainframe installation can support continuous business service, avoiding both aforethought(ip) and unplanned outages.In practice many customers use multiple main frames linked each by Parallel Sysplex and shared DASD (in IBMs case)citation eeded, or with shared, geographically dispersed storage provided by EMC or Hitachi. d. Mainframes are designed to handle very high volume input and output (1/0) and emphasize throughput computing. Since the late-1950s, mainframe designs have include subsidiary hardware (called channels or peripheral processors) which manage the 1/0 devices, leaving the CPU free to deal only with high-velocity memory. It is common in mainframe shops to deal with massive databases and files.Gigabyte to terabyte-size record files are not unusual. 7 Compared to a typical PC, mainframes ommonly have hundreds to thousands of times as much data storage online, and can access it much faster. citation needed Other server families also offload 1/0 processing ana empnaslze tnrougnput computlng. e. Mainframe come on investment (ROI), like any other computing platform, is babelike on its ability to scale, support mixed workloads, re duce labor costs, lay off uninterrupted service for critical business applications, and several other risk- alter cost factors. . Mainframes also have execution truth characteristics for fault across-the-board computing. For example, z900, z990, System z9, and System ZIO servers ffectively execute result-oriented instructions twice, compare results, arbitrate between any differences (through instruction retry and failure isolation), then shift workloads in flight to functioning processors, including spares, without any impact to operating systems, applications, or users.This hardware-level feature, also found in HPs Nonstop systems, is known as lock-stepping, because both processors take their steps (i. e. instructions) together. Not all applications absolutely need the assured integrity that these systems provide, but many do, such as financial transaction processing.