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Computer Aided Design

Computer Aided Design (CAD) is the act of using computers to design an object. CAD techniques follow standard engineering design and drafting procedures, but use a computer to help speed up the process.

1,069 Questions

Can I develop my own applications based on GstarCAD and can I run it directly under GstarCAD?

Yes, GstarCAD supports AutoLisp, Vlisp, ADS (SDS), VBA, ARX for your own applications. If your Lisp,ADS, VBA, ARX applications are based on IntelliCAD or AutoCAD, most of the applications can be migrated to GstarCAD directly with just a little or no modification.

Does GstarCAD have some express tools like autocad?

Yes, GstarCAD has more than 100 functions in Express Tools which are similar to AutoCAD, and some of them are GstarCAD unique features such as drawing compare,GstarCAD tools. All of them help engineers work more efficiently.

What is importance of AutoCAD in the field of engineering?

The computer-aided drafting program, AutoCAD, is the most common such program. It has many, many aids to drawing construction plans and detail drawings. If changes are later made in the design, it is quick and easy to change the drawing in AutoCAD.

What is the function of design center in GstarCAD?

In the design center of GstarCAD you can display layers, block, text style, dimension style of the opened drawing, you also can modify,delete related parameter such as text style. Furthermore in GstarCAD design center you can copy blocks, text style, dimension style between different drawings, you also can browse and insert raster image files.

How do you customize aliases while using GstarCAD?

On GstarCAD interface, select "Tools/Customize/Edit Program Parameter" in pop-menu, Open dialog box and you can select command in the list, then input an alias to add alias.

What is autocad draftsman?

An AutoCAD is a computer program used by many technical disciplines to draw precise, concise, and comprehensive diagrams depicting construction and fabrication techniques and/or layout plans to scale. CAD stands for computer aided drafting or computer aided design and drafting.

Design a Combinational circuit that has three input and one output the output is 1 when the binary value of the input is less than three the output is logic 0 otherwise?

If you are talking combinations, without binary number representations, then you are talking about a circuit that has a 1 output when any input is a 0. That is a 3 input NAND gate. If you are talking binary number representation, then you are talking about a circuit that has a 1 output when the inputs are 010, 001, or 000. Use a 3 to 8 decoder, with an OR gate on the low three outputs.

Advantages of using computer aided design in film making movies?

Computer aided design is not necessarily an appropriate tool for film making, unless there are structures required for the set that can be designed most economically using this tool.

What is Tab sequential format for CNC?

3.4.1 Structure of an NC Part Program

Commands are input into the controller in units called blocks or statements.

Block Format:

1. Fixed sequential format

2. Tab sequential format

3. Word address format

EXAMPLE:

Assume that a drilling operation is to be programmed as:

1. The tool is positioned at (25.4,12.5,0) by a rapid movement.

2. The tool is then advanced -10 mm in the z direction at a feed rate of 500 mm/min., with the

flood coolant on.

3. The is then retracted back 10 mm at the rapid feed rate, and the coolant is turned off.

1. Fixed sequential format

0050 00 +0025400 +0012500 +0000000 0000 00

0060 01 +0025400 +0012500 -0010000 0500 08

0070 00 +0025400 +0012500 +0000000 0000 09

2. Tab sequential format

0050 TAB 00 TAB +0025400 TAB +0012500 TAB +0000000 TAB TAB

0060 TAB 01 TAB TAB TAB -0010000 TAB 0500 TAB 08

0070 TAB 00 TAB TAB TAB -0000000 TAB 0000 TAB 09

3. Word address format

N50 G00 X25400 Y125 Z0 F0

N60 G01 Z-10000 F500 M08

N70 G00 Z0 M09

What is a reprogrammable microcomputer?

A microcomputer is a small, relatively inexpensive computer having a central processing unit (CPU) made out of a microprocessor.[2] The computer also includes memory and input/output (I/O) circuitry together mounted on a printed circuit board (PCB).[3] Microcomputers became popular in the 1970s and 1980s with the advent of increasingly powerful microprocessors. The predecessors to these computers, mainframes and minicomputers, were comparatively much larger and more expensive (though indeed present-day mainframes such as the IBM System z machines use one or more custom microprocessors as their CPUs).

How many commands are there in AutoCad?

Billions and billions :)
are you asking for the commands list or commands which are important and basic one......around 259= basic commands are their for autocad.

and for the list please go with this link: http://academics.triton.edu/faculty/fheitzman/commands.html

How can represent digital and analog information?

Digital quantized information and analog is just information. Like the letter "i" on your screen is digital and made up of a few pixels= quantized. The letter "i" drawn on a piece of paper is not quantized = analog.

What is the distance between CPU and ups?

cpu means central processing unit.it is known as brain of the computer.it gives commands to monitor for any things.

ups means unintruped power supply if there is no supply in the house then it allows the computer for operating for 10 minutes

How can we find out First and follow in compiler design?

first:

1. If first character of production is terminal then becomes first.

eg. first(abAb)={a};

2.If a production of this type A->BCD...

means all are variable or non-terminal then

if first(B) donot contains null then

first(A)=first(B)

stop here.

else

then also check for next non terminal like C here

same as above step

and first(A)=First(B)+first(C).

if we get null stop there.

FOLLOW:

if you know first then you can easily go with follow.

1.if a variable is start symbol then follow=$.

2.if a production is of A->(any string1)B(any string2)

then

follow(B)=first(any string2) -{null}

3.if a production is of A->(any string)B

then

follow(B)=follow(A) .

stop

it is very simple, please try to understand!

really good answer, for more visit:www.cmail.99k.org

A constant that multiplies a variable?

A constant that multiplies a variable is no longer a constant. By its very definition, a constant is something that can never be different. The result of variable multiplication is thus a variable, not a constant.

I would say that the above answer is not necessarily true. The common equation for the area of a circle is: area = pi * r2

The fact that you are multiplying the mathematical constant pi by a variable does not change the value of pi.

Agree with the second answer. Jsut to add, a constant that multplies a variable is called a coefficient.

Does 10BaseT cable need terminators?

Every transmission line requires termination, either in the form of the ultimate load, such as an antenna, or in the form of some kind of resistor. 10BaseT is no different.

However, that termination is usually built in to the device in which the cable is plugged. This is different from older systems, such as ArcNet, where the coax cable requires termination on each of the far ends. This is because the 10BaseT system is a star system rather than a partial ring system, so the termination is not a function of the chosen topology.

The reason termination is required in a transmission line is that every step change in characteristic impedance encountered by the wave front as it propagates through the line results in some kind of reflection back towards the source. These reflections result in distortion, loss of power, even damage to the transmitter or circuit.

To reinforce this understanding, consider the 75 Ohm coax cable typically used in a television distribution system. In the simplest case, you connect a cable from the service entrance to the TV set, and you are properly terminated. If, however, you use a splitter, such as for a TV set and a VCR, you now have three transmission lines, one to the splitter and two from the splitter. Is the RF output of the VCR connected to something? It should be, either to a TV set or to a terminator, otherwise there will be problems due to ringing, interference, ghosting, etc.

What is upstream data?

Upstream data is data from process units upstream of whatever unit you are concerned with. Usually this includes such properties as temperature, pressure, density, composition, enthalpy, heat capacity, etc.