# What is BCD arithmetic?

In computing and electronic systems, binary-coded decimal (BCD) is a class of binary encodings of decimal numbers where each decimal digit is represented by a fixed number of bits, usually four or eight. Special bit patterns are sometimes used for a sign or for other indications (e.g., error or overflow).

In this manner, what is the difference between binary and BCD?

Four for the first decimal digit and next four for the second decimal digit. This is the main difference between Binary number and binary coded decimal. For 0 to 9 decimal numbers both binary and BCD is equal but when decimal number is more than one bit BCD differs from binary.

## What is the gray code?

The reflected binary code (RBC), also known just as reflected binary (RB) or Gray code after Frank Gray, is an ordering of the binary numeral system such that two successive values differ in only one bit (binary digit).

## What is the ascii?

ASCII (American Standard Code for Information Interchange) is the most common format for text files in computers and on the Internet. In an ASCII file, each alphabetic, numeric, or special character is represented with a 7-bit binary number (a string of seven 0s or 1s). 128 possible characters are defined.

## What is meant by excess 3 code?

12. The Excess-3 code:- It is an important BCD code , is a 4 bit code and used with BCD numbers To convert any decimal numbers into its excess- 3 form ,add 3 to each decimal digit and then convert the sum to a BCD number As weights are not assigned, it is a kind of non weighted codes.

## What is the meaning of Ebcdic?

Extended Binary Coded Decimal Interchange Code (EBCDIC; /ˈ?bs?d?k/) is an eight-bit character encoding used mainly on IBM mainframe and IBM midrange computer operating systems.

## How many things can be represented using 8 bits?

Sometimes you hear a group of four bits called a nibble. The largest number you can represent with 8 bits is 11111111, or 255 in decimal notation. Since 00000000 is the smallest, you can represent 256 things with a byte. (Remember, a bite is just a pattern.

## What does BC stand for in scuba diving?

buoyancy control device

## What is a regulator for scuba diving?

A diving regulator is a pressure regulator that reduces pressurized breathing gas to ambient pressure and delivers it to the diver. The gas may be air or one of a variety of specially blended breathing gases.

## What are the parts of a regulator?

Five basic parts are usually included in a standard open water scuba diving regulator.

• First Stage. The regulator first stage attaches the regulator to the scuba tank.
• Primary Second Stage.
• Alternate Second Stage.
• Submersible Pressure Gauge and Gauge Console.
• Low-Pressure Inflator Hose.
• ## What is a yoke regulator?

DIN is an acronym – Deutsche Industrie Norm. Unlike yoke valves, DINs have a threaded opening where a regulator screws into the valve, and no o-ring (it’s found on the first stage in DIN systems). DIN valves are rated for higher pressure than yokes, making them indispensable for technical/deep diving.

## How close should you be to your dive flag?

Local laws regulate how close you have to stay to your flag, and how far boaters and skiers must stay away. For areas where no laws stipulate these distances, the rule of thumb is for you to stay within 15 metres/50 feet of your flag and for boats to stay at least 30 to 60 metres/100 to 200 feet away.

## What is gas narcosis?

Narcosis while diving (also known as nitrogen narcosis, inert gas narcosis, raptures of the deep, Martini effect) is a reversible alteration in consciousness that occurs while diving at depth. It is caused by the anesthetic effect of certain gases at high pressure.

## Why is it not good to take a hot shower after a deep dive?

b) The Reason why divers shouldn’t fly or take hot showers soon after deep dives is because when you go diving sometimes you get tiny air bubbles in your bloodstream. When you take a hot shower the temperature will increase the volume of the air bubbles which can cause decompression illness.

## What causes the bends?

Bends. The bends is a painflul condition that occurs in scuba divers who ascend too quickly or in aviators flying at high altitudes. Also called decompression sickness, the bends results when bubbles from dissolved gases form in the blood or in tissues because of rapidly decreasing pressure.

## How can you avoid getting the bends?

To safely ascend from a deep scuba diving session, divers must remain at each particular depth until sufficient gas has been eliminated from the body, each of these is called a decompression stop. “If you have access to oxygen, a mask should be applied to the diver as soon as possible.”

## Why do they call it the bends?

Decompression sickness (DCS), known as ‘the bends’ because of the associated joint pain, is a potentially deadly condition caused by bubbles of nitrogen gas forming in the blood and tissues. It’s most common among divers using scuba tanks, but can affect free-divers and people at high altitude.

## Why do marine animals not get decompression sickness?

— Global Animal. Although dolphins can avoid the bends, they are not immune to it. If divers ascend too quickly, the dissolved nitrogen forms bubbles in the body, causing decompression sickness. But marine mammals such as whales, dolphins, and seals are highly adept at dealing with the pressures of the deep.

## What are some symptoms of the bends?

The Chokes (pulmonary or lung decompression sickness)

• Rare but if it occurs can be very serious.
• A burning pain in the chest that is usually worse with breathing in (inspiration).
• Other symptoms include cough, difficulty breathing, and cyanosis (blue lips and skin)
• Divers with the chokes can progress to shock rapidly.
• ## Can you get decompression sickness in a pool?

Mythbusters! You can’t get a bend in shallow water. Decompression sickness is not totally dependent on deep/long dives. Uncontrolled or even controlled successive ascents in a short period, such as those experienced during pool training, can cause microbubbles to form in the blood stream, leading to DCI.

## How do you treat the bends?

If DCS is suspected, it is treated by hyperbaric oxygen therapy in a recompression chamber. If treated early, there is a significantly higher chance of successful recovery.

Originally posted 2022-03-31 05:25:38.

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