Page 89 - NUMINO Challenge_D1

10 Base Systems

Basic Concepts Bar Codes

Many of the products that you see and use everyday have a
bar code. A bar code represents information using a series of
lines of varying thickness. The bar code is a symbol that
uses the base 2 system to contain information about a
product.

Example Look at the box below. Find the type of product and its date of
manufacture.

124 8 10 16 Type Month Day

Bar Code 7 Ice Cream
10 Bread
5 Milk 6 Apple

8 Noodles 9 Jam

Class Notes

The first 5 spaces indicate the type of product. The colored spaces show 8 and ,

so the number of the type of product shown on the bar code is 8 .

Therefore, the type of product is .

The next 5 spaces indicate the month of manufacture. The colored spaces represent the

numbers and , so the month of manufacture is the th month.

Therefore, the month of manufacture is .

The final 5 spaces indicate the day of manufacture. The colored spaces represent the

numbers , , and so . Therefore, the day of

manufacture is .

Try It Again Look at the box shown in the Type Month Day
Example and find the type of
product, and its month and day of
manufacture.

86 NUMINO Challenge D1