Data. What is an Input Device? List three (3) examples of Input Devices. Define the term Data. In what phase of the DPLC would you find data? 1/18/2012Ms.

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Presentation transcript:

Data

What is an Input Device? List three (3) examples of Input Devices. Define the term Data. In what phase of the DPLC would you find data? 1/18/2012Ms. Ngui

Unprocessed and meaningless Raw facts and figures Consists of two (2) types: Discrete data Continuous data 1/18/2012Ms. Ngui

DISCRETE DATACONTINUOUS DATA Data that can be counted Has no value in between Examples are: You are to list two(2) Data that can be measured and recorded at many different intervals. Has values in between Examples are: You are to list two(2) 1/18/2012Ms. Ngui

Refers to the collection of data for input. Consists of two (2) types: Manual Input Automatic Input 1/18/2012Ms. Ngui

Entered directly into the computer One (1) transaction at a time Entered by data entry personnel Entered with an input device Stored on a data capture form 1/18/2012Ms. Ngui

Entered directly into the computer from: A source document or A turnaround document Entered with an input device 1/18/2012Ms. Ngui

Data is first recorded before it is entered into the computer. Data is captured at the source Example: Barcodes – food items, books 1/18/2012Ms. Ngui

The document that is output at one processing stage, is used as input for another processing stage. Example: Utility bills Skip six (6) lines 1/18/2012Ms. Ngui

The condition in which data are identically maintained during any operation. i.e transfer > storage > retrieval 1/18/2012Ms. Ngui

Two (2) techniques are used: Data verification – a check to ensure that data from the source document has been entered correctly. Data validation – the checking of data for errors before the actual processing 1/18/2012Ms. Ngui

Two (2) common errors are: Transposition – two (2) letters are mixed up. Example – double > duoble Typographical – a typing error. A missing letter or an extra letter Example – does > des OR penny > pennny 1/18/2012Ms. Ngui

Revise for spelling assessment > vocabulary list #1 Log onto IT for CSEC – Pg. 27 Matching descriptions & multiple choice Copy 7 complete 1/18/2012Ms. Ngui