Proyecto Tecnico en Sistemas

Proyecto Tecnico en Sistemas
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miércoles, 11 de marzo de 2009

GAME OF LOGIC ALGORITHMS

Publicado por Efrain Carvajal


In this game You see a wolf, a sheep CABBAGE
AND WHICH shall pass to the other side TAKING
INTO ACCOUNT THAT THE LOBO IS COME TO
THE SHEEP AND THE SHEEP eats cabbage. GIVING
CLICK IN THE IMAGE THAT APPEARS IN A CIRCLE
IN THE UPPER BOAT SUBE the item and clicking GO
takes you to the other side, clicking the image displayed
in a circle in THE UPPER LOW the selected item.
1. SUBA THE SHEEP
2. TAKE THE EDGE
3. DOWNLOAD THE SHEEP AND COME BACK
4. SUBA EL LOBO AND COME BACK
5. Download the SUBA LOBO AND RETURN THE SHEEP
6. SUBA LOWER THE SHEEP AND RETURN THE CABBAGE
7. CABBAGE AND LOWER THE RETURN
8. SUBA AND RETURN THE SHEEP
9. SHEEP THE LOWER END GAME

lunes, 2 de marzo de 2009

Publicado por Efrain Carvajal


ALGORITHMS


Cannibal GAME AND MISSIONARIES


STARTING THE GAME CLICK TO PLAY


You'll see in this game 3 cannibals and three missionaries must pass WHICH THE EDGE THE EDGE THE LEFT ARE EMPTY RIGHT TO END THE GAME. YOU MUST KEEP IN MIND THAT IF YOU ARE MORE cannibalism MISSIONARIES IN ANY OF THESE banks eat the missionaries. Missionary or clicking Canibal the boat rises or falls, by clicking on the icon GO BOTE move toward shore. ALWAYS GO TO THE BOAT FOR BUSY MOVING be at least one crewman.


MISSIONARIES and cannibalism


1 MONTE A Cannibal and a missionary in the pot TAKE

2 THE EDGE Cannibalism

3 LOWER AND RETURN

4 MISSIONARY AND THE LOWER TWO Cannibal SUBA AND COME BACK

5 LOWER AND RETURN A Cannibal

6 LOWER cannibalism SUBA TWO MISSIONARIES AND COME BACK

7 LOWER SUBA A MISSIONARY AND RETURN A Cannibal

8 LOWER cannibalism SUBA A MISSIONARY AND COME BACK

9 LOWER TWO MISSIONARIES AND RETURN SUBA A Cannibal

10 SUBA AND RETURN A Cannibal 11 COME BACK AND LOWER A Cannibal

11 SUBA AND RETURN A Cannibal 12 LOWER END GAME TWO Cannibal


lunes, 23 de febrero de 2009

DATABASE

Publicado por Efrain Carvajal


Order data .- In everyday life is continually interacts with entities such as individuals, or other documents. In a corporation, the entities are represented by the operators, employees, customers, suppliers, invoices. We would be in a hospital with doctors, patients, nurses, clinical pictures, etc.. Since in each case has to deal with a large amount of data, there arises the need to store so that we are easily accessible at all times and, therefore, useful to our activities. If for example every day we need to manage dozens of clients and invoices, using a system to store data,
such as a file, rather than rely solely on memory Objects from the database Tables: drive where we create the dataset from our database. These data are arranged in vertical columns. Here we define the fields and their characteristics. Later we will see what a field.
Consultations: here we define the questions to the database in order to extract and present the resulting information in different ways (screen, printer
Form: form element in the form of allowing the management of data in a more visibly appealing and comfortable.
Macro: a set of instructions that can be stored to automate repetitive tasks.
Module: a set of instructions or in Visual Basic language : Basic unit of a database. A field may be, for example, a person's name. The field names can not start with blanks and special characters. Can not carry points, or exclamation or brackets. If you can have spaces in between. A description of the field, to clarify information regarding the names of the field. The type field specifies the type of information you carry in the field, this can be: Written to introduce character strings up to 255
Memo: to introduce an extensive text. Up to 65,535 characters
Numeric: to enter numbers Date / Time: to enter data into a date or time Currency: To enter data in the number and currency
AutoNumber in this field, Access automatically numbered content
Yes / No: logical field. This type of field is only if a content type Yes / No, True / False, etc..
OLE Object: To enter a photo, graphic, spreadsheet, audio, etc.. Hyperlink: we can define a link to a website Search Wizard: Creates a field that lets you choose a value from another table or a list of values through a list box or combo box. Registration: is the set of information about a person or object. A record would be something like a tab.

CONCATENATE FUNCTION

Publicado por Efrain Carvajal

This feature allows you to combine multiple items into one text You can also concatenate two strings or a character with a chain to forma larger chain. Some examples are: 'a' concatenated 'b' -> "ab" "ABCD" Concatenated 'b' -> "ABCDb" 'a' concatenated "XYZ" -> "aXYZ" "ABCD" Concatenated "XYZ" -> "ABCDXYZ" (string1, string2, ...) String1, string2 ... are 2 to 255 text elements that will join in a single text element. The text items can be strings, numbers, or references to cells alone. Comments You can also use the arithmetic symbol "and" Commercial (&) instead of the Concatenate function to join text items. For example = A1 & B1 returns the same value = Concatenate (A1, B1). Example The example will be easier to understand if you copy to a blank worksheet. How to copy an example Create a spreadsheet or a blank. Select the example in the Help topic. Note Do not select the header row or column. Select an example of the Help Press CTRL + C. In the worksheet, select cell A1 and press CTRL + V. To switch between seeing the results and viewing the formulas that return the results, press CTRL + `(grave accent), or on the Formulas tab, in the Formula Auditing group, click Show Formulas.

1


2


3


4


A


Data





Full Name First Name Last Name





Edgar Ramos





David Lopez





concatenates a sentence from the above data





HARD DRIVE

Publicado por Efrain Carvajal

Physical Structure [edit]


Head read / write

Within a hard disk is one or several plates (usually between 2 and 4, although there are up to 6 or 7 dishes), which are disks (aluminum or glass) and concentric rotating all at once. The head (read / write device) is a set of vertically aligned arms that move in or out as appropriate, all at once. At the tip of these arms are the heads of read / write, thanks to the movement of the head can read both indoor and outdoor areas of the disc.
Each plate has two sides, and we need a head read / write to each side (not a head plate, but one per side). If you look at the schema-Cylinder Head Sector (below), at first glance are 4 arms, one for each dish. In fact, each arm is double, and contains 2 heads: one to read the face of the plate, and another to read the lower side. Therefore, there are 8 heads to read 4 plates. Heads reading / writing never touch the disk, but that pass very close (up to 3 nanometers), or 3 millionths of a millimeter. If one comes to him, causing extensive damage to the disc, rayándolo seriously because of how fast you spin the plates (one of 7,500 revolutions per minute moving at 120 km / h on the edge).

ALGORITHMS

Publicado por Efrain Carvajal

The importance of an algorithm is to show how to implement processes and solve mathematical problems mechanically or otherwise. As with mathematical functions, algorithms receive input and transform it into an outlet, behaving as a black box. However, not all black box that makes an entry in an output can be considered an algorithm for an algorithm that can be considered as such should be an orderly sequence, finite and defined (formalized their) instructions. This way you can monitor and predict the behavior of the algorithm for any input as possible (except probabilistic algorithms, which usually has a different output) from the monitoring of this sequence of instructions, which is as orderly and defined, does not result in ambiguities and its trace can be followed. The concept of algorithm, but similar and obviously related, not to be confused with the concept of the program. While the first is the specification of a set of steps (operations, instructions, orders ,...) aimed at solving a problem (method), the second is that all operations specified in a particular programming language and a specific computer, capable of being executed (or interpreted or compiled). An algorithm, strictly speaking, can not be executed until it is implemented, either in a programming language, in an electrical circuit, a mechanical device, using paper and pencil, or some other model of computation. Most of the algorithms involve methods of organizing data for computation. These objects are called, so the data structure, and are central objects of study in computer science. In this way, algorithms and data structures will always go hand in hand. Simple algorithms can lead to a complicated data structure and, conversely, complex algorithms can use simple data structures. When using a computer to help solve a problem typically faced with several possible schemes. For small problems, which only matters is what we use, as long as it takes to solve a problem correctly. For large problems (or applications where we need to solve many small problems), however, motivate us to invent methods that use time efficiently, quickly as possible. When a computer program is large or complex, this will be developed with much effort, since they must understand and define the problem to be solved by managing complexity, and break it down into smaller parts that can be solved more easily. Often, many of the algorithms that are needed, after the decomposition are trivial to the instrument. Computer Theory Formally, an algorithm calculates a function. Any finite set is large, and any large group can be expressed in terms of the set of natural numbers (infinite, but many, in fact there is another set which is also a big number), in essence, all algorithm functions calculated defined in natural numbers. At this point, a function is partially or fully defined. A function is partial if there is no natural numbers that belong to your domain (ie, there are natural numbers on which the function is not defined), and is a total function otherwise. If a function is partial, the algorithm calculates that only return a result (ie spends a finite time calculation) for the values on which the function is defined, not by returning a result (the computation time is infinite) for the remainder values. If an algorithm that calculates a function to return a partial result for the values of the function is not defined, then calculated according to that but to another. Similarly, an algorithm that computes a total function always returns a result for any value, and that like partial functions, it must exactly match the value returned by the function that calculates and repeatedly, if Otherwise, this function is not calculated but another. Thus, any algorithm calculates a function defined on natural numbers, whatever the nature. Any function for which there is an algorithm that calculates what is called a computable function (partially or fully computable computable depends of the degree of definition of the function in question), but there are functions that can not be calculated as the Ackermann function, the latter kind of functions are referred to as non-computable functions.