What is Bits: Definition and 73 Discussions

Drill bits are cutting tools used to remove material to create holes, almost always of circular cross-section. Drill bits come in many sizes and shapes and can create different kinds of holes in many different materials. In order to create holes drill bits are usually attached to a drill, which powers them to cut through the workpiece, typically by rotation. The drill will grasp the upper end of a bit called the shank in the chuck.
Drill bits come in standard sizes, described in the drill bit sizes article. A comprehensive drill bit and tap size chart lists metric and imperial sized drill bits alongside the required screw tap sizes. There are also certain specialized drill bits that can create holes with a non-circular cross-section.While the term drill may refer to either a drilling machine or a drill bit while in use in a drilling machine, in this article, for clarity, drill bit or bit is used throughout to refer to a bit for use in a drilling machine, and drill refers always to a drilling machine.

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  1. C

    Probability of Bit Strings with 1 and 00 Endings: A 10-bit Analysis

    Homework Statement Find the probability that a randomly generated bit string of length 10 begins with a 1 or ends with 00 if the probability that a bit is a 0 is 0.4. Homework Equations The Attempt at a Solution The probability that a bit is a 0 is 0.4 and that a bit is a 1 is...
  2. D

    Find the number of bits that can be stored on a 10cm disk

    Homework Statement A computer disk is made by focusing light to a spot whose diameter is comparable to the optical wavelength. Find the number of bits that can be stored on a 10cm diameter optical disk using an infrared laser. Homework Equations Lamda λ = diametre of laser The...
  3. T

    Bits, Bytes, transmission rates

    Problem : a) A good sized English book has about 100000 words. If an average English word is six characters long and each character needs 1 byte, show that the book can be stored in 600 kbyte of memory and show that the text takes nearly 5 seconds to be transmitted at 1 Mbit s-¹. Show that it...
  4. O

    How can I set the even bits to 1 using only specific operators?

    Homework Statement /* * evenBits - return word with all even-numbered bits set to 1 * Legal ops: ! ~ & ^ | + << >> * Max ops: 8 * Rating: 2 */ int evenBits(void) { return ?; } The Attempt at a Solution I have no idea! What I originally thought was that I would...
  5. D

    Game of Alternating Bits: Is There a Winning Strategy?

    Homework Statement Player 1 starts by choosing 0 or 1, then player 2, repeat infinitely many times and stick a decimal point in front and see the bit string as a real number between 0 and 1. If it's rational player 1 wins, irrational player 2 wins. Does either player have a winning strategy...
  6. D

    Exploring a Paradox: Representing Countable Sets with Bits

    Hello, I have a curiosity. With a finite number of bits, say 5, you can represent 2^5 items. If B = {00001, 00010, 00100, 01000, 10000} is the set of these 5 bits, you can combine them to represent the power set of B, with cardinality 2^5. With a countably infinite number of bits, you...
  7. wolram

    SD Card: Baffled by Big & Little Bits

    I just bought an SD card for my camera, talk about things getting smaller i could hardly hold the big bit that the little bit had to be pushed into, now i am baffled is it the big bit that holds the 1 gig memory or the little bit, if it is the little bit why have the big bit, or is that for...
  8. E

    Understanding 2's Complement w/ 4 Bits

    Why in 2's complement the range of numbers that can be represented with 4 bits are from -8 to +7? Wouldn't the numbers with 4 bits be till 15? I am confused.Please help me out. -Thankyou
  9. U

    Infrared LED - Transmitting Multiple Bits

    Hi all, quick question here. As part of a sophomore seminar class, I have this little task to complete. I currently want to send a series of 4 bits through an IR LED that will reach a GaAs photo transistor. What I'm doing is using a shift register to load in the binary value (via a parallel...
  10. T

    Entropy of a message of N bits (help)

    Hi, This is a re-launch of an earlier question that I have narrowed down to just part a). I have also added my musings on it so far. This is all very new to me (and we haven't been given much in the lectures to go by [nor is there a course text]). I'd appreciate some help asap! Homework...
  11. I

    Do new bits cause the expansion and acceleration of the Universe?

    Here is an article about the Holographic Principle found on Wiki, then please read my comments below: If new bits can actually create area (volume as described above), maybe the universe is expanding because its bits are increasing? Maybe since humans have developed computers and we are...
  12. L

    Is there a way to translate quantum bits in a traditional numerological system?

    Are quantum bits just a form of a ternary numeral system? If something can be 0, 1, or both simultaneously, isn't the superposition just another equal value? If the superposition of 0 and 1 were literally individual, combined, and possibly something different simultaneously, then it seems...
  13. S

    2 Bits of help neede for study Logarithm+Complex number

    Hey there I'm studying for end of year exams and can't figure out how to do these 2 questions: 1) Express \log_{10}(2\sqrt{10}) - \frac{1}{3}\log_{10}0.8 - \log_{10}(\frac{10}{3}) in the form c + \log_{10}d 2) Simply finding the cube root of a complex number in polar/cartesian form ie...
  14. C

    Calculating DC Offset for 19 High Bits Followed by Low Bit

    If I have a string of 19 continuous bits 'high' followed by a bit 'low', how do I calculate the DC Offset if the pattern is repeated? Is it just [(19 - 1)*(the amplitude)]/(20)? Thanks for the help. Chris
  15. L

    MATLAB Exploring MATLAB - Uncovering the Mysteries of the Fuzzy Bits

    MATLAB! Question! Hi, http://www.geocities.com/spoutveg10/matlab.JPG Does anyone know what the "fuzzy" bit at the tops of the spectrum are? I went for a complete guess out of distortion or noise. Any elaboration as to why? I connected up a Binouli random data source with a sample time...
  16. wolram

    Flimsy bits of wood and tensioned strings

    How do they make them so that these exquisite notes come from them, i mean they are flimsy bits of wood and tensioned strings, is there a (science) behind it ?
  17. U

    Bits Missing From Hubble Photos

    Why do some photos have black squares cut out of them from hubble, like this: http://nssdc.gsfc.nasa.gov/image/astro/hst_antennae_9734a1.jpg
  18. wolram

    Keeping Bits Warm in Freezing Fog

    I got called into work today on my day off, and is was **** cold, it is freezing fog outside and a max of 10c inside, how can i keep my bits warm ?
  19. C

    Which bits of the spring metal stretch and in what directions?

    When we stretch a spring like the one on this link, http://auto.howstuffworks.com/car-suspension3.htm it tends to obey hookes law (up to a point) - does this mean, like when wires are stretched (which also obey hookes law) the metal of the spring is actually streching and not just being moved...
  20. R

    Are strings the equivalent to bits?

    I often think about this subject, would it be a fair assumption to say that our electronic bits are a equivalent and more simple "thing" of that we assume to be the more elementar "particle" of the universe, a string, acording to the theory, it is the vibrating state of certain string that...
  21. C

    Bits and Bytes: Understanding the Fundamentals of Binary Representation

    Hello everyone I am enrolled in a AP Computer Science course. Currently we are learning about bits and bytes. Could someone please explain the concept of bits and bytes. For example, here are some questions that I have tried doing: 1. 16-bit binary numbers can be used to represent all...
  22. N

    How many binary strings of length 10 contains exactly two 01?

    Hi all! I'm in serious need of some help. The question: How many binary strings of length 10 contains exactly two "01"? My idea was to weld together 4 bits to 2 "01". That way, there's \frac{8!}{2!} strings with at least 2 "01". But there are a bunch of strings with more than 2 "01" in...
  23. wolram

    Program that drives my scanner had bits missing

    i had a problem earlier that russ,zantra and greg helped me out of, basicaly the program that drives my scanner had bits missing, as i NEVER load anything on my computer, apart from the os or download from the net, apart from saving certain items to MY DOCUMENTS, how can this happen? my...
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