How Does a Bar Code Reader Work

question 50

Short Answer

How does a bar code reader work?

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Definitions:

Consumption

The total amount of goods and services consumed by households over a specific time period.

Nominal GDP

The total worth of all end products and services made inside a nation over a specified time frame, valued at present-day prices.

Real GDP

Measure of a country's economic output adjusted for price changes (inflation or deflation), representing the value of all goods and services produced over a specific time period at constant prices.

Constant Base-Year Prices

A method to measure economic data where figures are adjusted for inflation to reflect real purchasing power, using a specific base year's prices.