The Devil Arm themselves (Melee)

 The Sparda and its unawakened form(Top), the Force Edge(Buttom), is the beloved demon-forged sword wielded by the The Dark Knight Sparda himself, and magically imbued with his power. Throughout the series, the sword is recognized as a source of god-like power, and in both Devil May Cry 3 and 4, it was the main objective of the villains. It is Dante's default weapon in Devil May Cry, and Trish's in Devil May Cry 2.

The Agni & Rudra are a pair of talking and living Devil Arms with serrated edges appearing in Devil May Cry 3 which originate from Agni & Rudra. They can be combined, and are able to hurl forth fire and tornado-like gusts using their technique "of gales and flames". They are wielded by Dante during the course of the game.

 Rebellion is Dante's standard sword. A keepsake and memento given to him by his father. This large magical blade is the physical manifestation of his power. Though it has the form of a standard claymore, it is a magical blade, and through its name, meaning "resistance", a symbol of his spirit. The blade's power originally laid dormant, but through contact with Dante's blood it was awakened to its true power.

Alastor is a living Devil Arm, the Thunder Sword and "Spirit of Lightning"Cite error: Closing. It only obeys commands of the chosen one. Hence, the powers of the Alastor do not work effectively against the Plasma.", appearing in Devil May Cry. It can only be wielded by the "chosen one" who can conquer it, but it is able to grant its possessor lightning speed and aerial capability.

4.Describe various types of touch screens and explain how a touch-sensitive

  

      A touchscreen is an electronic visual display that can detect the presence and location of a touch within the display area. The term generally refers to touching the display of the device with a finger or hand. Touchscreens can also sense other passive objects, such as a stylus. Touchscreens are common in devices such as all-in-one computers, tablet computers, and smartphones.

The touchscreen has two main attributes. First, it enables one to interact directly with what is displayed, rather than indirectly with a pointer controlled by a mouse or touchpad. Secondly, it lets one do so without requiring any intermediate device that would need to be held in the hand. Such displays can be attached to computers, or to networks as terminals. They also play a prominent role in the design of digital appliances such as the personal digital assistant (PDA), satellite navigation devices, mobile phones, and video games.

Ergonomics and usage

Finger stress

An ergonomic problem of certain types of (resistive) touchscreens is their stress on human fingers when used for more than a few minutes at a time, as significant pressure can be required, depending upon the technologies involved. This can be alleviated for some users with the use of a pen or other device to add leverage and more accurate pointing. The introduction of such items can sometimes be problematic, depending on the desired use (e.g., public kiosks such as ATMs). Also, more accurate control is achieved with a stylus, because a finger is a rather broad and ambiguous point of contact with the screen itself, but requires the user to possess fine motor skills to hold such a stylus.

Fingernail as stylus

These ergonomic issues of direct touch can be bypassed by using a different technique, provided that the user's fingernails are either short or sufficiently long. Rather than pressing with the soft skin of an outstretched fingertip, the finger is curled over, so that the tip of a fingernail can be used instead. This method does not work on capacitive touchscreens.

The fingernail's hard, curved surface contacts the touchscreen at one very small point. Therefore, much less finger pressure is needed, much greater precision is possible (approaching that of a stylus, with a little experience), much less skin oil is smeared onto the screen, and the fingernail can be silently moved across the screen with very little resistance,allowing for selecting text, moving windows, or drawing lines.

The human fingernail consists of keratin which has a hardness and smoothness similar to the tip of a stylus (and so will not typically scratch a touchscreen). Alternatively, very short stylus tips are available, which slip right onto the end of a finger; this increases visibility of the contact point with the screen.

Fingerprints

Touchscreens can suffer from the problem of fingerprints on the display. This can be mitigated by the use of materials with optical coatings designed to reduce the visible effects of fingerprint oils, or oleophobic coatings as used in the iPhone 3G S, which lessen the actual amount of oil residue, or by reducing skin contact by using a fingernail or stylus.

Combined with haptics

The user experience with touchscreens without tactile feedback or haptics can be difficult due to latency or other factors. Research from the University of Glasgow Scotland [Brewster, Chohan, and Brown 2007] demonstrates that sample users reduce input errors (20%), increase input speed (20%), and lower their cognitive load (40%) when touchscreens are combined with haptics or tactile feedback [vs. non-haptic touchscreens].

Gorilla arm

The Jargon File dictionary of hacker slang defined "gorilla arm" as the failure to understand the ergonomics of vertically mounted touchscreens for prolonged use. The proposition is that the human arm held in an unsupported horizontal position rapidly becomes fatigued and painful, the so-called "gorilla arm". It is often cited as a prima facie example of what not to do in ergonomics. Vertical touchscreens still dominate in applications such as ATMs and data kiosks in which the usage is too brief to be an ergonomic problem.^[

Discomfort might be caused by previous poor posture and atrophied muscular systems caused by limited physical exercise. Fine art painters are also often subject to neck and shoulder pains due to their posture and the repetitiveness of their movements while painting.

Screen protectors

Some touchscreens, primarily those employed in smartphones, use transparent plastic protectors to prevent any scratches that might be caused by day-to-day use from becoming permanent.

3.Describe different mouse types and explain how to use a mouse

A Computer mouse is a human interface device that operates by detecting two dimensional movements relative to its supporting surface. It comprises an object held under the user's hand with multiple buttons. The computer mouse features other elements also e.g. wheels which enables the user to perform various system dependent operations. The motion of the computer mouse is converted into motion of a cursor on display.

There are different types of computer mice, namely mechanical mice, optical mice, gyroscopic mice, 3D mice, tactile mice.

Mechanical mice: The mechanical computer mouse comprises a single ball that could rotate in any direction. The ball mouse has two freely rotating rollers. They are located 90 degrees apart. One roller senses the forward–backward motion of the mouse and other the left–right motion. Opposite the two rollers is a third one (white, in the photo, at 45 degrees) that is spring-loaded to push the ball against the other two rollers. Each roller is on the same shaft as an encoder wheel that has slotted edges; the slots interrupt infrared light beams to generate electrical pulses that represent wheel movement. Each wheel's disc, however, has a pair of light beams, located so that a given beam becomes interrupted, or again starts to pass light freely, when the other beam of the pair is about halfway between changes. Simple logic circuits interpret the relative timing to indicate which direction the wheel is rotating. (This scheme is sometimes called "quadrature encoding" or some similar term by technical people.) The mouse sends these signals to the computer system via a data-formatting IC and the mouse cable. The driver software in the system converts the signals into motion of the mouse cursor along X and Y axes on the screen. The ball is mostly steel, with a precision spherical rubber surface. The weight of the ball, given an appropriate working surface under the mouse, provides a reliable grip so the mouse's movement is transmitted accurately. Another type of mechanical mouse, the "analog mouse" (now generally regarded as obsolete), uses potentiometers rather than encoder wheels, and is typically designed to be plug-compatible with an analog joystick.

Optical mice: An optical mouse uses a light-emitting diode and photo diodes to detect movement relative to the underlying surface, rather than internal moving parts as does a mechanical mouse.

Gyroscopic mice: A Gyroscopic mouse uses a tuning fork or other accelerometer to detect rotary movement for every axis supported. The most common models (manufactured by Logitech and Gyration) work using 2 degrees of rotational freedom and are insensitive to spatial translation. The user requires only small wrist rotations to move the cursor, reducing user fatigue.

3D Mice: These devices generally function through ultrasound and provide at least three degrees of freedom.

Tactile mice: Tactile mouse which contains a small actuator that made the mouse vibrate. Such a mouse can augment user-interfaces with feedback, such as giving feedback when crossing a window boundary.

Courtesy of: Wikipedia "The free Encyclopedia"

2.Identify the keys and buttons commonly found on desktop computer keyboard and describe how keyboardfor mobile computers and devices differ from desktop keyboards?

QWERTY ( /ˈkwɜrti/) for the is the most common modern-day keyboard layout. The name comes from the first six letters (keys) appearing in the top letter row of the keyboard, read left to right: Q-W-E-R-T-Y. The QWERTY design is based on a layout created by Christopher Latham Sholes in 1873 in Milwaukee, WisconsinSholes and Glidden typewriter and sold to Remington in the same year, when it first appeared in typewriters. It became popular with the success of the Remington No. 2 of 1878, and remains in use on electronic keyboards due to the network effect of a standard layout and a belief that alternatives fail to provide very significant advantages.The use and adoption of the QWERTY keyboard is often viewed as one of the most important case studies in open standards because of the widespread, collective adoption and use of the product, particularly in the United States.

Courtesy of: Wikipedia "The free Encyclopedia"

1.Define input and differentiate among a program command and user respond?

Input is the term denoting either an entrance or changes which are inserted into a system and which activate/modify a process. It is an abstract concept, used in the modeling, system(s) design and system(s) exploitation. It is usually connected with other terms, e.g., input field, input variable, input parameter, input value, input signal, input port, input device and input file (file format).
Input may refer to:

• Advice (opinion), an opinion or recommendation offered as a guide to action, conduct.
• Information, any data entered into a computer or data processing system, see input output
• The act of entering data into a computer or data processing system (see Input/output).
• Input device, any peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system (such as a computer)
• Stimulus (physiology), a detectable change in the environment that influences an activity of an organism
• Power consumption, an amount of power used by a system.
• International Public Television Screening Conference, an international public television organization
• In economics, a factor of production, a resource employed to produce goods and services.

                 
 Command-line interface (CLI) is a mechanism for interacting with a computer operating system or software by typing commands to perform specific tasks. This text-only interface contrasts with the use of a mouse pointer with a graphical user interface (GUI) to click on options, or menus on a text user interface (TUI) to select options. This method of instructing a computer to perform a given task is referred to as "entering" a command: the system waits for the user to conclude the submitting of the text command by pressing the "Enter" key (a descendant of the "carriage return" key of a typewriter keyboard). A command-line interpreter then receives, parses, and executes the requested user command. The command-line interpreter may be run in a text terminal or in a terminal emulator window as a remote shell client such as PuTTY. Upon completion, the command usually returns output to the user in the form of text lines on the CLI. This output may be an answer if the command was a question, or otherwise a summary of the operation.
The concept of the CLI originated when teletypewriter machines (TTY) were connected to computers in the 1950s, and offered results on demand, compared to batch oriented mechanical punched card input technology. Dedicated text-based CRT terminals followed, with faster interaction and more information visible at one time, then graphical terminals enriched the visual display of information. Currently personal computers encapsulate all three functions (batch processing, CLI, GUI) in software.
The CLI continues to co-evolve with GUIs like those provided by Microsoft Windows, Mac OS and the X Window System. In some applications, such as MATLAB and AutoCAD, a CLI is integrated with the GUI, with some benefits of both.

Courtesy of: Wikipedia "The free Encyclopedia"

The Boss of every Mission

Dante is the main protagonist of the Devil May Cry series. He is the second son of the demon Sparda and the human Eva, and the younger twin brother of Vergil. As such, he is a half-demon, half-human hybrid. Dante is a mercenary dedicated to exterminating demons; a mission he follows in pursuit of those that killed his mother and corrupted his brother.

Difficulty Modes

Difficulty Modes

With each rise in difficulty, Enemies and Bosses generally get tougher and the player gets weaker. There are 6 modes for the Xbox 360 and PS3 versions of the game with an additional mode for the PC version.

Human

One of the default difficulty modes of the game. Enemies have less health, deal less damage and are quite docile. Bosses take more damage. The player deals more damage and takes less.

• Lesser demons and bosses health: 90%
• Lesser demons and bosses damage: 90%

Devil Hunter

One of the default difficulty modes of the game. This is essentially the Normal difficulty.

• Lesser demons and bosses health: 100%
• Lesser demons and bosses damage: 100%

Son Of Sparda

This difficulty mode is the equivalent of Hard. It is unlocked by beating the game on Devil Hunter. Enemies have more health, more hostile, deal more damage and tougher enemies appear early on. The player deals less damage and takes more.

• Lesser demons and bosses health: 175%
• Lesser demons and bosses damage: 175%

Dante Must Die

This difficulty is unlocked by beating Son Of Sparda mode. Enemies get tougher and Bosses utilize more attacks. Enemies also now have Devil Trigger and frequently use it.

• Lesser demons and bosses health: 225%
• Lesser demons and bosses damage: 225%

Heaven Or Hell

Unlocked by beating Son Of Sparda mode. Enemies and Bosses all die in one attack. The player also dies in one attack. However, the player is given 3~4 lives to use whenever he dies.

Hell And Hell

Unlocked by beating Dante Must Die. The player dies in one attack, but is given 3 gold orbs to utilize whenever he dies. Enemies and Bosses in this mode do not die in one attack, and adopt their difficulty from the Dante Must Die mode.

Legendary Dark Knight

This difficulty is only available in the PC version of the game. It is unlocked by beating the game on Human or Devil Hunter mode. It is similar to Son Of Sparda mode, but with more enemies spawning than before. In this mode, it is capable of spawning about 20~30 Scarecrows in a single room, making this mode a little bit harder than Son Of Sparda.

Automatic Mode

Main article: Automatic Mode

Although not listed as a Difficulty Mode in the Mission Menu, it is equivalent to the Easy-Automatic Mode. This mode can be activated depending on the player's choice on the New Game section. This mode allows easy completion of the game and turns it into a button-mashing fest.