Database System Basics

Database System Basics A computer system is made of different electronic components and parts that make it look complex. These fundamental components constitute a computer system that makes a computer to run effectively. The first component is the motherboard that forms a perfect platform on which internal electronic components are attached (Miller 67).Advertising We will write a custom essay sample on Database System Basics specifically for you for only $16.05 $11/page Learn More The motherboard consolidates all the basic components of a computer system. All the programs and applications in a computer system are run by a component known as the central processing unit. It is impossible for a computer to execute any tasks without the central processing unit (Miller 67). A computer can only boot to the operating system courtesy of the central processing unit. A computer system can not be complete without the storage media. The Random Access Memory commonly referred to as RAM is anot her fundamental component in a computer system that is responsible for storing files and information temporarily when the computer is running. The size of the Random Access Memory determines how fast the computer responds to commands. A computer with a low Random Access Memory will run slowly even if it has a powerful central processing unit. The other storage component in a computer system is the hard disk drive. Compared to the Random Access Memory, the hard disk drive stores data for a long time. The hard disk is able to retain the stored data and information with or without power. The data in the Random Access Memory disappears the moment the computer goes off. Because of its reliability, the hard disk is used to store very important files like system files and other program files.Advertising Looking for essay on computer science? Let's see if we can help you! Get your first paper with 15% OFF Learn More The other components include the power supply unit that is responsible for powering the computer system and the video card that is essential in displaying images. The graphics card makes the images and pictures appearing on the computer monitor to look clear and detailed (Pearsons 53). There are various ways in which the computer interacts with users on a daily basis. The user interacts with the computer system through the input and output devices. A combination of software and hardware form what is normally referred to as the user interface. The software enables the monitor to display the output on the computer monitor (Pearsons 53). The computer system receives input from users through hardware devices like the mouse, keyboard, joystick, game controller, touch screen and other peripherals. These input devices are referred to as peripherals because they are externally attached to the computer system. After processing the input in relation to the specified command, the user receives output from the computer system via output devices . Some of the output hardware includes the monitor and the printer. Human-computer interaction requires the user to be well equipped with the relevant computing skills and knowledge to be able to navigate the computer system effectively. The user is required to have some basic knowledge in computer operating systems, computer graphics, programming, database management and computer hardware technology. The computer is very useful in the sense that it helps human beings to process and store their data in a much simpler way. Computer applications such as the internet and computer games have enhanced human- computer interactions by necessitating information retrieval, electronic commerce and entertainment.Advertising We will write a custom essay sample on Database System Basics specifically for you for only $16.05 $11/page Learn More Miller, Michael. Absolute Beginner’s Guide to Computer Basics. New York: Que Publishing, 2007. Print. Pearsons, June Oja Dan. New Perspectives on Computer Concepts2012: Brief. New York: Cengage Learning, 2011. Print.

3 Types of Phrasal Verbs

3 Types of Phrasal Verbs 3 Types of Phrasal Verbs 3 Types of Phrasal Verbs By Mark Nichol Phrasal verbs are constructions consisting of a verb and either a preposition, a particle, or both. 1. Prepositional Phrasal Verb This construction consists of a verb and a preposition, as in â€Å"I take after him,† â€Å"We’re looking into that,† and â€Å"Please stand by.† 2. Particle Phrasal Verb This construction consists of a verb and a particle, as in â€Å"She didn’t want to give in,† â€Å"I decided to follow up,† and â€Å"He left out the best part.† A particle phrasal verb can also be interrupted by a noun or a pronoun, as in â€Å"He tried to look the name up,† â€Å"I handed the assignment in yesterday,† and â€Å"We worked the details out.† In these latter types of constructions, the particle can be relocated to be adjacent to the verb, as in â€Å"He tried to look up the name,† â€Å"I handed in the assignment yesterday,† and â€Å"We worked out the details.† Which alternative looks or sounds more natural varies randomly; in the first example, â€Å"look up the name† suggests viewing the name from a certain direction, while â€Å"look the name up† implies research, but the other two sentences seem better written when the verb and the particle are adjacent. 3. Prepositional-Particle Phrasal Verb This construction consists of a verb, a particle, and a preposition. Examples include â€Å"I’m looking forward to a vacation,† She sat in for me during my absence,† and â€Å"They’re not willing to put up with it anymore.† Note that many words serve as both prepositions and particles. As noted above, the phrase â€Å"look up† can refer to the act of directing one’s attention upward, but it also has a figurative meaning: When one looks something up or, to be more formal, conducts research sight, but not an upward motion of the head, is involved. Take care not to confuse phrasal verbs and compound nouns (sometimes used as adjectives) that consist of the same words. For example, one signs up for a class but attends a signup session, or simply a signup. Also, the prepositional phrases â€Å"in to† and â€Å"on to† are combined into one word only in certain circumstances: Into is correct when the reference is to a location, as in â€Å"I went into the doctor’s office,† a literal reference, as opposed to â€Å"I went in to see the doctor,† which is figurative. Onto is correct when you could precede it with up, as in â€Å"I climbed (up) onto the rock,† but in sentences such as â€Å"I want to hold on to this book,† the two-word form is preferred. Notice, too, that phrasal verbs are generally colloquial and are seldom suited for formal writing; a more succinct alternative is frequently available. And even in informal prose, writers should consider omitting extraneous adverbial particles when a verb alone would do, as in â€Å"help out† in place of help. Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Grammar 101 category, check our popular posts, or choose a related post below:75 Contronyms (Words with Contradictory Meanings)50 Idioms About Arms, Hands, and Fingers40 Irregular Verbs That Can End in â€Å"-t†