Describe how a light sensor is used to read a barcode.

Question:

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Cambridge IGCSE Computer Science Coursebook

ISBN: 9781107518698

1st Edition

Authors: Sarah Lawrey, Donald Scott

See More Books

Question Posted: Sep 06, 2021 02:28 AM

See More Questions

A sensor is used to monitor the performance of a nuclear reactor. The sensor accurately reflects the state of the reactor with a probability of .97. But with a probability of .02, it gives a false...
A laser used to read CDs emits red light of wavelength 700 nm. How many photons does it emit each second if its power is? (a) 0.10 W, (b) LOW?
A capacitive displacement sensor is used to measure rotating shaft wobble as shown in the following figure. The capacitance is 880 pF with no wobble. Find the change in capacitance for a + 0.02 mm to...
Figure shows a hypothetical speed distribution for particles of a certain gas: P(v) = Cv2 for 0 v0. Find (a) An expression for C in terms of v0, (b) The average speed of the particles, and (c) Their...
The acidic constituent in vinegar is acetic acid. A 10.0-mL sample of a certain vinegar contains 501 mg of acetic acid. What is this mass of acetic acid expressed in micrograms?
Northrop Grumman is a leading aerospace/defense company. The company has developed the F-16 fighter, the Apache helicopter, the AWACS early warning airborne radar, and the B-2 Stealth bomber....
Calculate SS, the sum of the squared deviations, for a sample using either the denitional or the computational formula and describe the circumstances in which each formula is appropriate.
Refer to the preceding facts for Postmans acquisition of 80% of Spartans common stock and the bond transactions. Postman uses the simple equity method to account for its investment in Spartan. On...
Which of the following is true? A. Some countries may prohibit forms of leading and lagging. B. Some countries may prohibit forms of leading and lagging & Some countries may prohibit netting. C. None...
On 1 July 2016, Parent Ltd acquired 70 percent of shares in Subsidiary Ltd. On 31 March 2017 Parent Ltd sold $100,000 of inventory-type B that cost $80,000 to Subsidiary Ltd. On 1 July 2017,...
Describe how an infrared sensor works.
Explain what is meant by an output device.
At the same temperature and pressure, the chemical potentials of a component in two phases under equilibrium conditions (a) Are equal (b) Are different (c) Can not be predicted (d) None of these.
Find derivative of arcsin x
1. Examine the impact of feedwater heater pressure on cycle efficiency and determine the intermediate pressure for optimal performance for one heater.
3. Environmental impact of adding feedwater heaters
1. Discuss the importance of genetic diversity in fish populations. 2. a) Habitat restoration and connectivity in population conservation is faced with many challenges. Discuss (5 marks) b)a) ...
1. Assumethatlengthin Oreochromis variabilis (Victoria Tilapia) ispolygenicvaryingfrom30cmto50cm. A 30cm purebred parent is crossed with another purebred 50 cm individual and the resulting F 1...
Martin Chuzzlewit purchased a vacant lot outside of London for 1,350,000, because he heard that a shopping mall was going to be built on the other side of the road. He figured that he could make a...
If your school has a subscription to the FASB Codification, go to aaahq.org/ ascLogin.cfm to log in and prepare responses to the following. (a) What is the stock dividend? (b) What is a stock split?...
Consider the following recursive mergesort algorithm (another classic divide and conquer algorithm). Mergesort was first described by John Von Neumann in 1945. The basic idea is to divide an unsorted...
Matrix multiplication plays an important role in a number of applications. Two matrices can only be multiplied if the number of columns of the first matrix is equal to the number of rows in the...
Consider the following portions of two different programs running at the same time on four processors in a symmetric multicore processor (SMP). Assume that before this code is run, both x and y are...
Which of the following statements regarding traditional cost accounting systems is false? a. Products are often over or under cost in traditional cost accounting systems. b. Most traditional cost...
Bart is a college student. Since his plan is to get a job immediately after graduation, he determines that he will need about $250,000 in life insurance to provide for his future wife and children...
Reporting Financial Statement Effects of Bond Transactions (please show me how you got the answers) Lundholm, Inc., which reports financial statements each December 31, is authorized to issue...

Describe how a light sensor is used to read a barcode.

Question:

Step by Step Answer:

All barcode readers use a light source and sensors to detec...View the full answer

Cambridge IGCSE Computer Science Coursebook

Students also viewed these Computer science questions