Bit Definition and 380 Threads

In this picture, as well as countless others: http://en.wikipedia.org/wiki/Image:NPN_BJT_Basic_Operation_%28Active%29.svg we have electrons flowing from emitter to base, and 'holes' from base to emitter. Why the distinction? When an electron flows from emitter to base, is it not the...

Here is my problem: There is a 4 bit ADC with an input range of -5 to +5 Volts. I would like someone to check my answers. Q. How many states does the ADC have? A. The ADC has 2^4 = 16 states. Q. What voltage does each step represent? A. range = 10 V no. of steps = 16-1 = 15...

Just though you would find this interesting: http://random.irb.hr/index.php

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

A metal is not a good dielectric. A vacuum is a decent dielectric. There are much better dielectrics than a vacuum. A high dielectric constant, k, means the material exhibits good dielectric behaviour. A vacuum has k = 1, better dielectrics have k > 1. What is the dielectric constant of...

Homework Statement The bank is opened from 9:00 to 17:00. From 9:00 to 10:30 the average client count who come into bank is 32/hour, from 10:30 to 15:30 it is 26/hour and from 15:30 to 17:00 it is 50 clients per hour. I have to test the hypothesis that the average count of clients who...

Homework Statement Image: http://img.photobucket.com/albums/v696/talimtails/PP23.jpg A particle with unknown mass and charge moves with a constant speed v = 1.9 x 10^6 m/s as it passes undeflected through a pair of parallel plates, as shown above. The plates are separated by a distance d...

hello can some one explain this in details thank u a- How many bit strings of length seven either begin with two 0’s or end with three 1’s? ] b- How many bit strings of length 10 contain either five consecutive 0’s or five consecutive

If we have Einstein-Hilbert Lagrangian so: \mathcal L = (-g)^{1/2}R for R Ricci scalar (¿?) then my question perhaps mentioned before is if we can split the metric into: g_{ab}= Ndt^{2}+g_{ij} dx^{i} dx^{j} N=N(t) 'lapse function' then i would like to know if somehow you can split...

Just wondering what if your GPA is lower by .1 then the minimun required for a given university. My cousin has 2.9 from a community college and is hesitating to sent out a transer application to a school that has minimum of 3.0 Appreciate any info,

The hard iron bar called irony, that is. The irony of toothaches. My sadistic dentist informs me, my wisdom teeth are coming in all wrong and will necessarily need amputation. Poor hypocrite me, I had declared I'd sooner die naturally than go under the knife; now I've given in, to schedule the...

Let's say I have 10 items, and I want to examine every combination of 5 items. Obviously, there are http://www.google.com/search?q=10+choose+5" possible combinations. But I want to actually enumerate them and iterate through them as efficiently as I can in a computer program. I'm wondering...

hey guys anyone got any ideas on this: f/19 cassegrain focus of a 408mm telescope. ccd is 12.3mm long, each pixel is a square of side 24 x 10E-6 m, grating used has 1200lines/mm 1. = the spectrum is imaged on a ccd with a zoo lens such that the dispersion is 3.3nm/mm. what is the range of...

hi, can someone advise me this question attached. thanks!

I've been working on this problem to review (see the attachments), and my circuit analysis skills are quite rusty. I've determined that the circuit should be underdamped, and it will have a step response. Based on this, I'm using the equation V0(t)=Vf+B1e^(αt)cos(ωdt)+B2e^(ω0t)sin(ωdt). As you...

so if the plot of x(t) is given, then I get confused about how to graph x(4-t/2), I know how to graph x(t+4), x(t/2) and x(-2) .. but when they are all put together, I get very confused about the order ... any help?

So my dad gave me this problem because he likes to bother me: Explain why this is funny: click on it to see a big picture since it won't let me do it this way :/ Does anyone get the joke?

Need a bit of help with Art(:sad:) (Okay, if this isn't in the right location, feel free to move it and inform me.) I'm doing a 1-point perspective drawing on a 18x12 inch piece of paper. My vanishing point is directly at (9,6) and my back wall is 1.5 inches left and right, and 1 point...

Calculate the percentage by mass of the elements shown in the following compounds A) Br in MgBr[SIZE="1"]2 b) O in Ca(NO[SIZE="1"]3)[SIZE="1"]2 c) N in NH[SIZE="1"]4NO[SIZE="1"]3 any help is appreichated thanks regards

Could someone recommend a way to open and edit a bitmap file in Visual C++?

I am trying to set up some 555 timers to either: 1 - open a valve for a short period of time and then close it 2 - activate some sort of switch that will push a button to open the valve it will be much more simple for me if I could find something that will push a button when triggered by a...

Ok here goes: I had a disagreement with someone over what the word law (in physics ofcourse) stands for. Now I realize that it can refer to a prescriptive law (such as human laws passed down by an authority for example) and descriptive law (a law that describes some kind of regularity in nature...

The question in the textbook is something like: Why doesn't the armature in a doorbell vibrate back and forth repeatedly like in a buzzer? I'm thinking it's related to the fact that the book says that in a buzzer, there's no gong/chimes, etc. Since the doorbell has chimes, is that why it...

It may be that I'll leave New York alone and travel far far to other states. However I've never done such a thing. I mean, I always travel with my parents, and never by train or bus (except within NYC). So, do you know any websites out there, that let me play a tiny bit, and find the cheapest...

I have read a bit on E=MC^2, and would I be correct in saying that matter and energy are essentially the same thing? I was wondering about this because I asked my Physics teacher and she said that matter and energy are two separate entities. but can't matter be converted into energy? It would...

Could someone please give me a basic idea on the following : a) Use of linear interpolation . the Newton Raphson method (a geometrical approach) b) numerical integration . the trapezium rule. I need to know just the basics for an exam so please be descriptive in your post. Thanks a...

Okay, before I say anything else, the power source here is 220V. Right. So today I was changing the fuse on my Hartke A35 bass amp. I accidentally used a 5A fuse instead of the 1A one. now it won't work. Am I screwed?

At my work the students are supposed to keep their student IDs on them at all times and show them to whom ever is at the entrance when they come through so we know that they are students. Now my boss doesn't seem to really care whether or not we know they are students, he wants us checking...

If it is not urgent to upgrade your PC, you should wait for the 65nm and Dual Core 64-bit processor based PC/Notebook, it is a great improvement to cope with Windows Vista.:bugeye:

Bit of a problem with polar coordinates. (Only trig knowledge needed.) Right. So, in this problem, I'm given the polar coordinate point (rad2, 4.39) -- "rad2" being, naturally, short for radical 2. I'm to find the rectangular coordinates of the point, using the formulas: x = r cos Theta...

yes, i am defintely not a genius at this stuff... i am having some problems figuring these two problems out: Earth is 1.5x10^11 m from the Sun and has a period of 365.2 days. Mars is an average of 2.28x10^11 km from the sun. what is the orbital period of Mars in Earth years? i am not...

I'm taking a course on numerical methods using MATLAB, and right now we're discussing linear systems. This is the question I was given. P(x) = (3/2)x^2 - 1/2 Q(x) = (5/2)x^3 - (3/2)x Compute vectors P and Q using the following MATLAB commands. X = -1:1/500:1; N = length(X); P =...

Americans treat the rest of the world as a game of Risk. Check out clip (klipp) 7 here: http://www.kanal5.se/templates/page.aspx?id=11876 Funny...but also a bit scary?

know a bit more about "petro-dollars" Think this is the right place for this thread but please move it if needs be wise mentor person. Just watched a really interesting programme about a conspircay theory on the iraq war. Just wanted to know abit more about "petro-dollars" but i haven't got...

I am just a home user, my PC is intended for internet, music, movie, graphic and word processing, so, do i need a dual-core 64bit processor?

Hi, a. A free-running, flashlamp-pumped Nd:YAG laser produced pulses having a duration of 500 microseconds at a repetition frequency of l00Hz. Deduce the pulse power in this type of operation if the average power of the laser is 5W. (100W) b. This laser is then Q-switched and the average...

Here's the item needing to be proofed (this is not homework, but I'm very interested in it). Show that for each odd prime number y, there is exactly one positive integer x such that x(x+y) is a perfect square. Thanks for any help/leads, etc.. -Steve

(This isn't a homework question before you ask- it just came up in something I was reading.) Am I right in thinking that a boat floating in water would float neither higher nor lower if the gravity were altered, as its mass would remain constant? Would the same remain true if an object were...

Secret codes are often needed to keep a message hid. Having numbers stand for letters was a trick they often did. So, instead of putting SOS in letters on a line. The secret letter writer wrote 1-9-1-5-1-9 But what if it was different and the numbers went to ground? If s-i-x...

hello Buoyancy is the upward force exerted on an object immersed in fluid, and upward force on an object in a fluid is equal to the weight of the fluid that was displaced. If this bouyant force is less than the weight of the object itself, the object will be left with a net downward force...

I'm having a little difficulty understanding a few key electronic concepts and am hoping a some of you may be able to shed light. 1) In a power source (i.e. battery) I understand that E = V / D. Despite the size and mass of an electron being incredibly small; when enter the field- do they...

Hello all, I was recently talking about the Seebeck effect with one of my colleagues, and we've run into a bit of a puzzle. Why are *dissimilar* metals required to produce it? All of the various sources I've consulted state very clearly there must be two different metals (or I suppose you...

Hi again :biggrin: , here's another one of my find picture questions. In the following picture I had a guy on one hand. Now, it says the ground reaction force is 1000 N and I have to resolve this force into it's vertical and horizontal components. One hand position My questions are...

I'm supposed to build a 4 bit synchronous up counter that counts in binary from 1-12 and restarts. I've made a circuit similar to the image shown below. My question is, what do i do to make it count from 1-12 instead of 1-16 and restart back at one...

hello Boy can physics be confusing :( change of velocity - delta (V) Short time period - delta (T) Change of angle - delta (alpha) Velocity - V Centripetal acceleration - a This I understand V = radius * delta (angle) /...

Well has anyone noticed it is a bit quiet upstairs? Have all the crackpots retreated? or is there nothinig new.

i have 7 data lines coming out from a microcontroller... i need the 8th one to control where its going to, either to a 7 input on a RAM chip, or a 7 input on an LCD display. basically i think I'm looking for a 7/8 bit switch... does one exist? can anyone supply me with the name of such a...

I need to rant a bit. Very frustrated. :( Ok, today I had my mechanics exam (2nd yr mech eng). Half solids, half dynamics. I went really well on the solids part, I reckon maybe 70%? Anyway, I am just pissed off about the dynamics part. It was hard and very different to past years. This is...

Today is not very cool, it's hot. I went out with some of my friends to...look things. I went to a bush to see some strange flowers but when I got out, there are some black ant-like insects biting my arms. I went home and now looked again my arms, very very round red spots with black small...

this is the problem: A projectile is fired with an initial speed u and at an angle of elevation ®. The air resistance is known to be quadratic and the terminal velocity has a magnitude vt. Show that the equations of motion for the projectile can be cast into the form y' = f (t; y); t >=...