Computer Science - Ch#5 - Input Devices

A device which is used to convert a physical document or picture into a digital form is called (a)  

OCR Stands for:

• Optical Character Registration

• Optical Computer Recognition

• Optical Character Recognition

• Optical Computer Registration

The software which helps to convert a scanned picture into a text document is known as:

(a)  

CT Scanner is an application of (a)   Scanning

When a barcode scanner scans a barcode, no or littlie light is reflected from (a)   lines

When the barcode is scanned the White(Light) and Black(Dark areas are scanned and converted to following binary digits:

• Light=1 & Dark=0

• Light=0 & Dark=1

• Light=1 & Dark=1

• Light=0 & Dark=0

The barcode number of the products in a store's database is known as the _________________ as each product has unique barcode

• Main Field

• Identity Field

• Unique Field

• Key Field

Which of the following is NOT an advantage of using barcode system at a store:

• Automatic Stock Control

• Easier to Update Prices of Items

• Increases Profits

• Quicker Process of Billing

As compared to barcodes, QR codes can hold up to _________ digits

• 5000

• 7000

• 10000

• 15000

The most commonly used input device for data entry is called:

(a)