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Katen [24]
3 years ago
8

Which business application uses electronic tags and labels to identify objects wirelessly over short distances?

Computers and Technology
1 answer:
Varvara68 [4.7K]3 years ago
4 0

Answer:

Option A (Radio Frequency Identification)

Explanation:

Option A (Radio Frequency Identification)

Radio Frequency Identification:

This technology uses radio waves to transfer data between a reader and movable items. The benefit of this technology is we do not require physical contact with items and scanner.

Components of RFID:

  • tags (computer chip)
  • Reader
  • Communication System
  • RFID software

There are two RFID standards:

  • Electronic Product Code (EPC) standard
  • International Standard Organization (ISO)
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Find the double word-length 2's complement representation of each of the following decimal numbers:a. 3874
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Answer:

-3874₁₀ = 1111 1111 1111 1111 1111 1111 1101 1110₂

Explanation:

2's complement is a way for us to represent negative numbers in binary.

To get 2's complement:

1. Invert all the bits

2. Add 1 to the inverted bits

Summary: 2's complement = -N = ~N + 1

1. Inverting the number

3874₁₀ = 1111 0010 0010₂

~3874₁₀ = 0000 1101 1101₂

2. Add 1 to your inverted bits

~3874₁₀ + 1 = 0000 1101 1101₂ + 1

= 0000 1101 1110₂

You can pad the most signigicant bits with 1's if you're planning on using more bits.

so,

12 bits                          16 bits

0000 1101 1110₂  = 1111 0000 1101 1110₂

They asked for double word-length (a fancy term for 32-bits), so pad the left-most side with 1s' until you get a total of 32 bits.

           32 bits

= 1111 1111 1111 1111 1111 1111 1101 1110

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