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Binary Number 21 × 13 63 21 273 First, find 3 × 21. Then, find 10 × 21, and add these two results together to get the final product. Note that the product has more digits than either of the two original numbers. You can follow the same procedure to multiply two binary numbers: 10101 × 01101 10101 00000 10101 10101 [...]

Pointers Pointer is a special type of variable that contains a memory address. It is not a variable that contains a value, rather an address of the memory that is contained inside a pointer variable. In C++ language, variables can be without type. Either we can have a void pointer or these can be typed. [...]

Water-Engines Before the invention of the steam-engine human industries were largely dependent on the motive power of the wind and running water. But when the infant nursed by Watt and Stephenson had grown into a giant, both of these natural agents were deposed from the important position they once held. Windmills in a state of [...]

Fermenting I allow myself the pleasure of thinking that I am causing some of my readers a little surprise when I tell them that cacao is fermented, and that the fermentation produces alcohol. As I mentioned above, the cacao bean is covered with a fruity pulp. The bean as it comes from the pod is [...]

Chick Design The distance from A to B is 50 straws (count first fold); from B to C is 21; from C to D is 6; from D to E is 19; from E to F is 7; from F to G is 18; from H to I is 5; and from G to J [...]

The Dressing-Room & the Bath Dressing-rooms and closets should be necessities, not luxuries, but alas! our architects’ ideas of the importance of large bedrooms have made it almost impossible to incorporate the proper closets and dressing-places a woman really requires. In the foregoing chapter on bedrooms I advised the division of a large bedroom into [...]

Accumulators. Storage or Secondary Batteries Storing Up Electricity.—In the foregoing chapters we have seen that, originally, electricity was confined in a bottle, called the Leyden jar, from which it was wholly discharged at a single impulse, as soon as it was connected up by external means. Later the primary battery and the dynamo were invented [...]

Child’s Muffler This is a combination of flat and round web. Knit ten inches of flat web, change to round web by bringing the yarn across the center of the hole in the knitter to the opposite post, and knit ten inches, or the number of inches necessary to go around the neck. Change again [...]

Fig. 91. Laid work might be described as couching on a more extended scale—a given space is covered with threads taken from side to side in parallel lines close together, fixed at either extremity by entering the material. Further security is usually given by small couching stitches dotted down at intervals over the laid threads, [...]

After a great deal of argument from the chief engineer, and the firm which furnished the pump, both making a strong plea for a change in the piping, the company accepted the inevitable, and the dotted portion shows the present layout. The elbow M was removed, and a tee put in its place to which [...]