For the envelope of an oscillating signal, see Envelope waves. For the abstract concept, see Envelope category theory.

No we are not talking about female hobbyist or how to pick up girls. If your home projects use logic parts then you will be interested in GAL s. These parts may be the only device you need in your Logic parts bin. They are programmable to implement the logic of almost any logic device and they can do so much more.

Using GAL s you can do this with ease. No problem, create a work-alike with a GAL. Is glue logic eating up too much space on your board? You can typically replace basic logic gates and similar parts with a single GAL. The 22v10 GAL is a pin 0. Futurlec also has GALs at very attractive prices.

Knowing the internal structure of the GAL also makes it possible to work backwards from the binary GAL data to the original equations, if you ever need to reverse-engineer a GAL program. Each output has a small block containing a single OR gate fed by between 8 and 16 AND gates, with each AND gate fed from another horizontal row in the array.

The array also contains many vertical wire columns. The DOS command-line program that does this conversion is named eqn2jed.

You can find this tool through a web search, or just grab it out of the Opal Jr package herepart of a National Semiconductor tool suite. The syntax of a.

A 4-bit select input A is used to select one of 16 data inputs D, which is passed to a single data output Q.You must know the structure of a straight-line equation before you can write equations for parallel or perpendicular lines.

The standard form of the equation is "y = mx + b," in which "m" is the slope of the line and "b" is the point where the line crosses the y-axis. After completing this tutorial, you should be able to: Find the slope of a line that is parallel to a given line.

Find the slope of a line that is perpendicular to a given line. Example 5: Find an equation of the line that passes through the point (-2, 3) and is parallel to the line 4x + 4y = 8 Solution to Example 5: Let m 1 be the slope of the line whose equation is to be found and m 2 the slope of the given line.

Rewrite the given equation in slope intercept form and find its slope. 4y = -4x + 8 Divide both sides by 4. After completing this tutorial, you should be able to: Find the slope given a graph, two points or an equation.

Write a linear equation in slope/intercept form. A horizontal line is one the goes left-to-right, parallel to the x-axis of the coordinate plane. All points on the line will have the same y-coordinate. In the figure above, drag either point and note that the line is horizontal when they both have the same y-coordinate.

3. A straight line has equationy=5–3x (a) Write down the gradient of the line. (b) Write down the coordinates of the point where the line crosses the y axis.

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Write equations of parallel & perpendicular lines | Analytic geometry (practice) | Khan Academy