Educational Blog - Ajiboye Gbenga @ Sunlite Digital ALBESTA ACADEMY LEKKI

  DATA PROCESSING : DEFINITION AND DATA PROCESSING CYCLE/STAGES Definition of Data Processing Data processing is a computer process that converts data into information. Data Processing Cycle/Stages Data processing cycle  is the sequence of stages in processing data. The stages in data processing include: 1. Data gathering or collection 2. Data collation or preparation 3. Input stage 4. Processing stage 5. Storage stage 6. Output stage 1. Data Gathering :  This is the process of collecting data together before processing. The methods of gathering data include: a. Interview b. Questionnaire c. Record review d. Observation 2.  Data Collation : This is the assembling of data in a standard order. 3. In put Stage: At this stage data are entered into a device like calculator or computer for processing. In computer, data are entered via input devices such as, Keyboard, Mouse, Joy Stick, Light pen, Track Ball, Scanner, Graphic Tablet, Microphone e.t.c 4. Processing Stage : T...

  LOGIC GATES/CIRCUITS  1-2 INTRODUCTION/DEFINITION, TYPES, SYMBOLS AND USES Objective:  At the end of the lesson, the students should be able to: 1. Define logic gates 2. State the types of logic gate 3. Draw logic gates symbols 4.State the uses of logic gates DEFINITION OF LOGIC GATES A logic gate is an elementary building block of a digital circuit. M ost logic gates have two inputs and one output. At any given moment, every terminal is in one of the two binary conditions low (0) or high (1), represented by different voltage levels. Types of Standard Single Logic gate There are three types of standard single logic gates. They are: 1. AND gate 2. OR gate 3. NOT gate Alternative Logic Gates are: 4. NAND gate 5. NOR gate 1.    AND gate :  AND gate will give a high output only if all of the inputs are high. It means multiplication (x). For example if A = 0 and B= 1, A AND B = 0 X 1 = 0 AND GATE SYMBOL 2.  OR gate  : This  is a digital logic ga...