Computer Mouse :: Computer Science

Computer Mouse The Computer Mouse The computer mouse first came about in the early 1980's. The idea being that the movement from the users hand could be turned into signals that the computer could read moving the cursor around and also allowing the buttons to function when pressed. Today there are a few different types of computer mice on the market. These being the mice that use the traditional tracking ball, the optical mouse and the mouse that has no physical connection to the computer. The most common mouse found near a computer today is the traditional mouse that uses the tracking ball. This is the same method as was used when the mouse was first released in the 1980's. The track ball inside the mouse touches the desk when it is moved. When the ball moves the motion is detected by two perpendicular axis, one which detects x axis directional motion and the other y-axis direction motion. Tracking Ball Perpendicular axis motion detectors Hole in which track ball would sit The diagrams above show the tracking ball and the hole in which the tracking ball sits. You can see the x and y axis motion detectors of which the y-axis detector lies 90Â ° from the x-axis detector. These motion detectors are also known as rollers. When the mouse is in use the tracking ball moves moving one or both of the rollers. Each roller is connected to a shaft, which spins a disc. The disc has holes in it and next to the disc is an infrared LED and an infrared sensor. As the disc spins the hole in the disc breaks the beams of light generated by the LED and the sensor picks up these pulses of light. The speed of the pulses is related to how far the mouse has travelled. If the disc spins faster the further the mouse would have travelled. A diagram below shows one of these discs. LED light LED sensor Disc Shaft So from the mouse which is mechanical the movement and distance can be measured. This all starts at the track ball as explain above and ends at the transducers, which send the information to the computer. Once the distance, movement and direction data is gathered from the physical and the pulses of light are picked up from the infrared sensor the information is sent to the transducers. These transducers translate the information into electrical signals. These signals are translated into binary and sent to the computer. The computer will understand the binary data thus moving the cursor on the screen as appropriate. This shows that both physical and electrical operations

Biblical Worldview Essay Essay

The Apostle Paul wrote to the Roman church to prepare them for his visit to Rome prior to leaving for Spain. He explained to the church how Christians, Jews and Gentiles alike, should view the natural world, our identity, our relationships, and our culture due to our relationship with Christ. He explains the necessity for righteousness because without Christ we are dead in our sin. But God, through his goodness and grace has provided a way to righteousness through Jesus Christ. The Natural World According to Genesis, God created the heavens and earth (our natural world) and everything in them. In Romans 1:20 Paul states, â€Å"For since the creation of the world God’s invisible qualities-his eternal power and divine nature-have been clearly seen, being understood from what has been made, so that men are without excuse.† God created the world, his power and authority is evident in this creation and in this way man was supposed to know Him. However they turned their backs on him and according to verse 22 â€Å"exchanged the glory of the immortal God for images made to look like mortal man and birds and animals and reptiles.† Because of Adam and Eve’s disobedience in the Garden of Eden, sin came into our natural world which started the demise of spiritual man as well as God’s intended order. Human Identity â€Å"God created man in his own image,† (Gen 1:27). Our identity is firmly established by knowing God, more specifically, knowing God through Jesus Christ. We are created with a â€Å"God shaped void† in our spirit man. If we do not fill that void with a relationship with God, we will seek to fill it with anything else that gives us temporary pleasure. Paul says in Romans chapter 1, that men turned away from God and turned to idol worship. Three times in this chapter Paul states that God â€Å"gave them over† to their sinful desires (v.24), their shameful lusts (v. 26), and their depraved minds. (v28). In and of ourselves, we are destined to die, not only physically but spiritually. God however, has made a way. Paul eloquently shares the path to salvation, righteousness, and sanctification through Jesus Christ.

Death Of A Salesman By Arthur Miller - 1316 Words

Husbands and wives assume a vow of support for one another as they embark on a lifelong journey together through the ups and the downs. In Arthur Miller’s play Death of a Salesman, the main character, Willy Loman, is an aged and failing salesman attempting to provide for his family without asking for help from anyone. His wife, Linda Loman, is one of the most intelligent and levelheaded characters in the play. Although her husband treats her poorly at times, she ceaselessly supports him and does everything in her power to ensure his happiness. Linda understands Willy’s declining mental health and knows that he is becoming less stable each day. Through her continued support of Willy and his unrealistic aspirations, Linda allows Willy’s mental decline to continue without attempting to keep him in check with reality. By ignoring Willy’s mistakes, failures, and blatant suicide attempts, Linda permits Willy’s disconnect from reality to continue until she is freed by his eventual death. Linda and Willy’s relationship in the play is characterized by deep love and affection, but Willy does not frequently show the physical manifestations of such feelings. After thirty-five years of marriage, both characters have come to know each other’s subtle quirks and dreams, but Linda’s thorough understanding of Willy cannot be reciprocated. At first glance, she resembles a stereotypical housewife who passively stays home while her husband maintains his role as the breadwinner of the family,Show MoreRelatedDeath Of A Salesman By Arthur Miller1387 Words   |  6 PagesAmerican play-write Arthur Miller, is undoubtedly Death of a Salesman. Arthur Miller wrote Death of a Salesman in 1949 at the time when America was evolving into an economic powerhouse. Arthur Miller critiques the system of capitalism and he also tells of the reality of the American Dream. Not only does he do these things, but he brings to light the idea of the d ysfunctional family. Death of a Salesman is one of America’s saddest tragedies. In Arthur Miller’s, Death of a Salesman, three major eventsRead MoreDeath Of A Salesman By Arthur Miller888 Words   |  4 PagesDeath of a Salesman† is a play written by Arthur Miller in the year 1949. The play revolves around a desperate salesman, Willy Loman. Loman is delusioned and most of the things he does make him to appear as a man who is living in his own world away from other people. He is disturbed by the fact that he cannot let go his former self. His wife Linda is sad and lonely; his youngest son Biff is presented as a swinger/player while his eldest son Happy appears anti-business and confused by the behaviorRead MoreDeath Of A Salesman By Arthur Miller1573 Words   |  7 Pagesrepresents a character with a tragic flaw leading to his downfall. In addition, in traditional tragedy, the main character falls from high authority and often it is predetermined by fate, while the audience experiences catharsis (Bloom 2). Arthur Miller’s play Death of a Salesman is considered to be a tragedy because this literary work has some of the main characteristics of the tragedy genre. In this play, the main character Willy Loman possesses such traits and behaviors that lead to his downfall, and theRead MoreDeath of Salesman by Arthur Miller972 Words   |  4 PagesIn the play Death of a Salesman by the playwright Arthur Miller, the use of names is significant to the characters themselves. Many playwrights and authors use names in their works to make a connection between the reader and the main idea of their work. Arthur Miller uses names in this play extraordinarily. Not only does Miller use the names to get readers to correlate them with the main idea of the play, but he also uses names to provide some irony to the play. Miller uses the meanings of someRead MoreDeath Of A Salesman By Arthur Miller1628 Words   |  7 PagesArthur Miller wrote the Pulitze r Prize winning play Death of a Salesman in 1949. The play inflated the myth of the American Dream of prosperity and recognition, that hard work and integrity brings, but the play compels the world to see the ugly truth that capitalism and the materialistic world distort honesty and moral ethics. The play is a guide toward contemporary themes foreseen of the twentieth century, which are veiled with greed, power, and betrayal. Miller’s influence with the play spreadRead MoreDeath Of A Salesman By Arthur Miller949 Words   |  4 PagesDeath of a Salesman can be described as modern tragedy portraying the remaining days in the life of Willy Loman. This story is very complex, not only because of it’s use of past and present, but because of Willy’s lies that have continued to spiral out of control throughout his life. Arthur Miller puts a modern twist on Aristotle’s definition of ancient Greek tragedy when Willy Loman’s life story directly identifies the fatal flaw of the â€Å"American Dream†. Willy Loman’s tragic flaw can be recappedRead MoreThe Death Of A Salesman By Arthur Miller846 Words   |  4 PagesA Dime a Dozen The Death of a Salesman is a tragedy written by playwright Arthur Miller and told in the third person limited view. The play involves four main characters, Biff, Happy, Linda, and Willy Loman, an ordinary family trying to live the American Dream. Throughout the play however, the family begins to show that through their endeavors to live the American Dream, they are only hurting their selves. The play begins by hinting at Willy’s suicidal attempts as the play begins with Linda askingRead MoreDeath Of A Salesman By Arthur Miller Essay2538 Words   |  11 PagesSurname 1 McCain Student’s Name: Instructor’s Name: Course: Date: Death of a Salesman Death of a salesman is a literature play written by American author Arthur Miller. The play was first published in the year 1949 and premiered on Broadway in the same year. Since then, it has had several performances. It has also received a lot of accordances and won numerous awards for its literature merit including the coveted Pulitzer for drama. The play is regarded by many critics as the perfectRead MoreDeath Of A Salesman By Arthur Miller2081 Words   |  9 Pages#1 â€Å"Death of a Salesman† by Arthur Miller is a tragedy, this play has only two acts and does not include scenes in the acts. Instead of cutting from scene to scene, there is a description of how the lighting focuses on a different place or time-period, which from there, they continue on in a different setting. The play doesn’t go in chronological order. A lot of the play is present in Willy’s flashbacks or memories of events. This provides an explanation of why the characters are acting a certainRead MoreDeath Of Salesman By Arthur Miller1475 Words   |  6 Pagesto death to achieve their so- called American dream. They live alone and there is no love of parents and siblings. They may have not noticed the America dream costs them so much, which will cause a bigger regret later. In the play Death of Salesman, Arthur Miller brings a great story of a man who is at very older age and still works hard to achieve his desire, which is the American dream. Later, he no tices that his youth is gone and there is less energy in his body. Willy Loman is a salesman, who