Educational Blog - Ajiboye Gbenga @ Sunlite Digital ALBESTA ACADEMY LEKKI

 DIGITAL DIVIDE  1-  CONCEPT OF DIGITAL DIVIDE: MEANING, BRIDGING THE GAPS, OLD ECONOMY VS NEW ECONOMY The Concept of Digital Divide The present age is referred to as digital age . It is called a digital age because the current global economy is driven by a digital device known as the computer. The computer represents data and instructions in 0s and 1s called binary codes, hence, it is known as a digital device. One of the reasons for inventing the computer is to reduce the world to a global village. To achieve this, everyone must have access to a computer (mobile phone, laptop, etc.) and internet connectivity. Meaning of Digital Divide Digital divide refers to the gap between people with effective access to digital and information technology and those with very limited or no access at all. Digital Divide, or digital split , is a social issue referring to the differing amount of information between those who have access to the Internet and those who do not have access....

  CLASSIFICATION OF COMPUTER SYSTEM ACCORDING TO TYPES, SIZES AND PURPOSES Objectives: Student should be able to state 1.     Classification of computers by types 2. Classification of computers by sizes Classification Of Computers By Types Types of computers are: (i)                 Analog Computer (ii) Digital computer (iii) Hybrid computer (i)                 Analog Computer: This computer uses continuous physical phenomena such as electrical, mechanical or hydraulic quantities to solve problems. Examples are thermometer, speedometer, old radios e.t.c (ii)               Digital computer: This computer performs calculations and logical operations with quantities represented as digits, usually in the binary system (0’s and 1’s). Examples are PC (personal computer), calculators, digital clock, digital cameras e.t.c (iii)         ...

 Historical Development of Computer Early Computing Devices - Mechanical and Electromechanical Early Computing Devices (Introduction) Early ages counting devices are fingers, feet, toes, pebbles, grains, sticks, cowries, e.t.c. The major problem with these devices is that, they cannot be used for counting large numbers efficiently. The invention of mechanical counting and calculating devices includes: i.                    Abacus ii.                  Slide Rule iii.                Pascal’s Arithmetic Machine (The Pascaline) iv.               Joseph Jacquard Loom v.                 John Napier (Napier Bones) vi.               Gottfried Leibniz Machine i.                    Abacus : It was dev...

  HISTORICAL DEVELOPMENT OF COMPUTER DEVICES II (UP TO 2OTH CENTURY) ENIAC, EDVAC, UNIVAC, EDSAC, ABC, PERSONAL COMPUTER (PC) Computer Devices Up to 20th Century are: 1. ENIAC 2. EDVAC 3. UNIVAC 4. PERSONAL COMPUTER (PC) 1.ENIAC In 1946, John Mauchly and J. Presper Eckert completed the ENIAC  (Electronic Numerical integrator and Computer) . It was the first general purpose computer. ENIAC contained 18,000 vacuum tubes, weighed 30 tons, occupied 1800 square feet of floor space and required 160 kilowatts of electrical power. The ENIAC used punched card for input and output. ENIAC was used by US for hydrogen bomb project and programming. 2. EDVAC Features and components The EDVAC  (Electronic Discrete Variable Automatic Computer)  is the successor of the   ENIAC and was made by the same designers: John Mauchly and Presper Eckert in 1949.  Unlike its predecessor the ENIAC, it was binary rather than decimal. It was the first designed stored  program co...