This topic contains a solution. Click here to go to the answer

Author Question: Explain the two common biphase schemes, Manchester and Differential Manchester. What will be an ... (Read 183 times)

nramada

  • Hero Member
  • *****
  • Posts: 580
Explain the two common biphase schemes, Manchester and Differential Manchester.
 
  What will be an ideal response?

Question 2

Why is digital signaling more straightforward than analog signaling?
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Kaytorgator

  • Sr. Member
  • ****
  • Posts: 345
Answer to Question 1

Manchester is used in Ethernet and other LANs, whereas Differential Manchester is used in token ring LANs. With Manchester, the direction of the transition in mid-interval, negative to positive or positive to negative, indicates the binary bit value. For a 1 bit, the transition is always from negative to positive; for a 0 bit, it is from positive to negative. This mid-bit transition serves not only to represent data, but also provides clocking. With Differential Manchester, the presence or absence of a transition at the beginning of a bit interval indicates the bit value. The transition in mid-interval is used only for self-clocking, not to provide data, which is an advantage.

Answer to Question 2

Digital signaling uses only two values: 0 and 1. These values are represented electronically. Because digital signals are one value or the other, with no variance in between, they are a discrete representation. This discrete representation means that digital signals have only a given, specific value. Digital signaling is usually less expensive than analog signaling because it requires less complex circuitry. Noise interference is less of a problem in digital signaling, making error detection and correction easier. A disadvantage is that digital signals are more susceptible to attenuation. This weakening of the signal is caused by friction. The longer the distance that a signal needs to travel though a circuit the more probable attenuation becomes. Different media, however, will suffer from attenuation at varying distances. Digital signals can be carried over copper or fiber-optic cables.




nramada

  • Member
  • Posts: 580
Reply 2 on: Jul 7, 2018
Excellent


irishcancer18

  • Member
  • Posts: 310
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

For a complete list of videos, visit our video library