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JSS 3 Computer (1st, 2nd & 3rd Term)

Agricultural Science

FARM ANIMALS

FARM ANIMALS (Identification and types) Farm animals are animals which are domesticated and reared by man.  They are generally referred to as livestock. Examples are cattle, sheep, goat, poultry, rabbit, camel, horse, donkey, grass cutter, fish, snail etc. Types of farm animals Farm animals have different features and are useful for different purpose. Some animals possess fur, wool or hair and breast feed their young, they are referred to as mammals. Examples of mammals are rabbit, cattle, sheep, goat etc. Some farm animals possesses feathers, and have beaks for feeding, they are referred to as birds or poultry animals examples are chicken, duck, goose, quail etc.   Some have scale, gills for respiration and live inside water they are called fishes. Examples are mackerel (titus), horse mackerel (kote), herring (shawa), tilapia, (blue whiting, hake (panla)), alaska pollock (okporopo), argentina silus (ojuyobo), catfish. Other forms of farm animals are invertebrates (lacking… Read More »FARM ANIMALS

Computer-Studies

SPREADSHEET

SPREADSHET TERMINOLOGIES A cell is a space in a worksheet formed by the intersection of a row and a column. An active cell is the cell that is currently worked upon. E.g cell G7 is the active cell the above diagram.   ROW: is defined as the horizontal space that is going across the window. Numbers are used to designate each ROW’s location.   COLUMN: is defined as the vertical space that is going up and down the window. Letters are used to designate each COLUMN’s location.   FORMULAS: formulas allow the spreadsheet users to do calculations with figures. The inclusion of formula has made the application unique. Formulas are group of characters we enter that serve as instruction for the spreadsheet package to perform calculations on the data is a spreadsheet. Example, C4= A4+F5  would calculate and display the sum of cell A4 and cell F5 into cell C4.… Read More »SPREADSHEET

Computer-Studies

SPREADSHEET

SPREAD SHEET Spreadsheets are like lined paper with columns. The sheet itself comprises of columns (vertical) and rows (horizontal) which are in turn, made up of cells. A spreadsheet is the computer equivalent of a paper ledger sheet.   Spreadsheet can be defined as the combination of rows and columns used in performing arithmetic calculations. It was first constructed in 1979 and has developed into one of the most widely used software products during the 1980s. It is widely used in a diverse range of discipline such as mathematics, engineering, science, medicine, the arts, social science, accounting and education.   SPREADSHEET PACKAGE Electronic spreadsheet is an application package used mostly in accounting, statistics, financial and inventory control. Spreadsheet package is a software that allows the use of numerical data and thereby performing automatic calculations on numbers contained in a table. Spreadsheet packages are used to handle accounting problems, financial analysis,… Read More »SPREADSHEET

Computer-Studies

FORMS OF DATABASE

There are various forms or ways by which database can be set up. They include: Flat file database Relational database Hierarchical database Network database Operational database Distributed database End user database   FLAT FILE DATABASE This is the traditional data file storage system ideal for storing small amounts of data that needs to be humanly readable or edited by hand. They are called flat because they contain only one table. The disadvantage is that flat files can be corrupted easily.   RELATIONAL DATABASE This is the most common of all the different types of database, files are organized in tables called relations. Each table has a key filed which is used to connect to other tables. Hence the tables are connected through several key fields.   HIERARCHICAL DATABASE This form of database has a tree-like structure. In this database, a single table acts as the root of the database from… Read More »FORMS OF DATABASE

Computer-Studies

DATABASE

Database is an application that is used to store information in a structured way. It is a collection of records or data in an organized form. A database is an organized collection of related information that allows the storage of different types of record with appropriate interconnections. Databases are designed to offer an organized mechanism for storing, managing and retrieving information. Database operates through the use of tables.   CONCEPT OF DATABASE The idea of database came as a result of how people keep files in an office cabinet. In the ancient time, there were no computers and most fillings and storing were done manually. This allows redundancy of data and time wastage.   Advantages of Database It enables file or document sharing It allows consistency of data. It saves time. No data redundancy. It allows full file access.   Disadvantages of Database It is expensive to maintain. It requires… Read More »DATABASE

Computer-Studies

DIGITAL LITERCAY

USES OF DIGITAL LITERACY In Education: digital literacy is more than having the knowledge of how to use a computer, what your software program does or the function of the hardware but also about using that knowledge to actually facilitate the learning process. Educators are often required to be certified in digital literacy to teach certain software, and more prevalently to prevent plagiarism among students.   In Society: it helps to communicate and keep up with societal trends. Literacy in social network services and web sites help people stay in contact with others, pass timely information and even sell goods and services.   In Workforce: those who are digitally literate are more likely to be economically secure. Many jobs require a working knowledge of computers and internet to perform basic functions.   Digital composition: is a new type of composition that focuses on technology’s impact in writing environment. The goal… Read More »DIGITAL LITERCAY

Computer-Studies

DIGITAL LITERACY

The term digital describes electronic technology that generates stores and processes data in terms of two states which is either positive or negative, 0 or 1. However, literacy is the ability to read and write or the ability to use language to read, write, listen and speak.   Digital literacy is a term that refers to someone’s ability to understand, organize, locate, analyze, and evaluate information by using digital forms of technology. It includes writing papers, creating multimedia presentations, and posting information about yourself or others. It is also the awareness, attitude and ability of individuals to appropriately use digital tools and facilities to identify access, manage, integrate, evaluate, analyze and synthesize digital resources.   DEFINITION Digital literacy is the ability to use information and communication technologies to find, evaluate, create and communicate information. It involves the use of digital devices such as smartphones, tablets, laptops and desktop PCs for… Read More »DIGITAL LITERACY

Computer-Studies

DIGITAL DIVIDE

OLD ECONOMY Old economy is the economy system mainly based on subsistence farming. It involves trade by barter. It is associated with the under-developed or developing countries of the world.   FEATURES OF OLD ECONOMY Its processes were time consuming. It required a lot of labour. It was mechanically driven. Scarcity of labour and low manpower development. Intense labour based production. It was constrained by space, time and distance   EVALUATION List THREE factors that affect digital divide. Explain economic factor.   NEW ECONOMY The new economy was an evolution of developed countries from an industrialized/manufacturing based wealth creation economy to the service sector based economy. As a new economy is emerging , the old economy is fading out gradually.   FEATURES OF NEW ECONOMY It is a digital economy. It is not constrained by time, space and distance. It is technologically driven. It is a global economy.   BENEFITS… Read More »DIGITAL DIVIDE

Computer-Studies

DIGITAL DIVIDE

Digital Divide is used to describe the division of the world into two different groups. i.e. those that have access to the internet and those who do not have access to the internet. In other words, it is the unequal access by some members of the society to information and communication technology. The term global digital divide refers to differences in technology development and access between countries or continents.   In the technology revolution, Digital divide is basically the disparity between those that have access to technology tools and those who don’t.   THOSE THAT HAVE ACCESS                                           Educated people. People living in urban areas or cities. More industrially developed countries. People with high income. People with good skills, knowledge and ability to use the internet.   THOSE THAT DO NOT HAVE ACCESS Uneducated people People living in rural areas or villages. Less industrially developed countries. People with low income… Read More »DIGITAL DIVIDE

Computer-Studies

USES OF SEARCH ENGINE

A search engine is a software program or script available through the Internet that searches documents and files for keywords and returns the results of any files containing those keywords. A search engine is a site on the WWW that allows you to search for other websites. It is more powerful than a web directory. It will search the web or the basis of the keyword that you give.   There are thousands of different search engines available on the Internet, each with their own abilities and features. The first search engine ever developed is considered Archie, which was used to search for FTP files and the first text-based search engine is considered Veronica.   Today, the most popular and well-known search engine is Google. Other popular search engines include AOL, Ask.com, Baidu, Bing and Yahoo. A search engine has a huge database of internet resources such as web pages, newsgroups, programs, images etc. The major function of a search engine is that it helps to locate information… Read More »USES OF SEARCH ENGINE

Computer-Studies

INTERNET

The word “INTERNET” stands for International Network simply put as NET. It comprises of all computers around the world, connected together to share resources and information irrespective of distance and/or geographical location. The Internet is a worldwide communication medium or pool from where people all over the world could exchange retrieve, disseminate and store information thus, turning the world into a global village. It is the use of internet that actually turns the world into a global village where users like government, military, educational and commercial institutions around the world become one. There is no person, company, government or country that can claim single ownership of the internet. The computers within the internet are connected via communication equipment including telephone lines i.e. wired or wireless, satellites etc.   WHAT IS INTERNET? The internet, that is, International Network is an electronic means of communication via a computer network, whereby people all… Read More »INTERNET

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