1990-11-17 — Page 27

(27)育教:日一初月十年午庚曆夏

報日僑華

1.六期星、日七十月一十(〇九九一年九十七國民華中

有日一初月十年午庚夏

ABREKK

• 博士於較早時致問號,「這項委任亦同時,

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揚讚員議發宏黃 神精學辦處統漁 重井業學德品來年十四

九

西

1991 中學會考預習惠

明德出版社-

MILL & DALE PRESS.

Mathematics (7)

1

「團財話電綫無代二第

宅傳宣箂籌告廣英委

Exercise 7:

Graphical solut

equations. (11)

世務

The shave of the graph

equations A

(where A, B and

arcîntec

etched as shown in figure

B

1991: 中

ご明出版

預習欄

MIELA DALL PRESS

Computer (7)

imitations of Flowcharting

mitations

(a) Ploschiant, .... is useful when the algorithe is simple. Complicated. Flowchart of complicated algorithm. is certain difficult, to trace.

Completed algorithm" "shouldin, boy represented by flowcharts. Fach ne of the flowcharts pertorn a simple task of the algorithm.

Chidy

(3) Flowchart tracing as easy in the

direction of flow

is impossible so trace the flowchart in the reverse directiun.

Solution

equation

Another kind of problem Analysis. Technique

Top-down Analysis

Discussion

(1) To solve the quadratic equation to ourain. It is put at the top of the analys

task is divided into smaller and simpler steps until each step can be solved. Fách step can be refined unti] 1-(2) it is simple, and, easy.

Example: Perform a top-down analysis of

the following task

Solve aquadratic equation ax+bxfce by the femiuta

The sequence of solving the problem. will be from top to botton and ithèr from left to rights

It may be performed as the following sequenca,

1. Input the coefficients a. Lat Lake sure thật đi 0. Calculate the roots by the

•formula

2.1 Balculate the defermidont

Db-4ac

. 2.1.1. Make sure that D X D 2.2 Calculate

raqt

Advantages of flowcharting

61) The step by step nature

flowchart gives a logical analysis · of the problem. §. difficult problems is broken.up into simps steps.

(2) Flowchart can be used as a tool for "debugging. It is unvor Dana postes t the-Ingleaf the algorithan. Flowchart tracing is easier to Tocate the logical epror,

:(3), Computer: program in written the control the computer to perform the required, job, But the logic tracing on the program is rather difficult. Therefore the flowchart

acts as an effective communication: for the peoples involved.

(4) Flowchart helps others to

understand the algorithm of the, Solution. Therefore it is then a vital part

program documentation.

-(5) Flowchart is knową to be portable.

This means that flowchart is allo Meninindependenttsyra symbole representation of logical algoritam tuts MLA Dont hi the problem sel ajag Brocedure, Therefore it also independent or any high. Töber programming language:

It is always a ban. habit' "do before ay cumputer: preparatior.

wathost

kuput the coeffici

Calculati

of the

roots

Print

the

-roots

formula

Pidre

gure

that

312:

(3)

first lev

culate the

roots

and 3 compris refinement

The boxes 1.1, (221)

Print

Print

(3.1) 3.2) ace refinement

He box 21.1

third'

refinement,

(2-5), and

(a) Bied the vile of this (b) Find the values of A and (c) What dcditional, fragan would be necessary to grapically, the equation

by, Jising the graph of

The flowchart can be coded into BASIC program,

20-INPUTS THE COEFFICIENTS. QUADRATIC EQUATION A

2: Figure 12 shown the

THEN GOTO 90

1991 000 za m

Mill & DALE PRESS

Economic & Public Affair (7):

Business Units (1).

Gwnership

(1) Public Unit

ور پر ڈھائے۔

Definition:

The Form a Cantosurisa wholly owned)

by the Duplic tie apternment)?

Forms:

one

National Zed industries and direct provision of services by the, government.

Special characteristics:

Giant Win Industrial Co.

FLANZ, VOERINGSFOLD INDUSTRIAL CONCKE,,

HU WANG HOROWO-KOWALOON BAY, KEN, FK

TAL-B52-759,90 1

ОН

Make

sure

that

ownership any no private dual may control the enterprise ANG

anagement is mainly laged by the government. avia e doing business is not whely for profit-meking- Since ang provision of serviCES to se public and maintaining Assent services anaye. Nel, tha and self

te hart is of a large scale production it 5 st

to provide:

o by the gove

services to

Examplex..

TheKowloon-Cantan.

Corporation!

Confusing terms:

The public unis business, may he called public enterprise. However, the toolid tilities... referred

chose companies

(private nager'ship

ZERS SMA AUTO AS-209 AT computer system

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Rublic

qwitership) providing scue zhaic services like transportation; gas electricity, wator, etc...

(2) Private Unit

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The form of entero private diy duals.

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According to the number of owners we pay sub-divide the privato,

(a) Sole

we owner

owners

Proprietorship

(b) Partnership two to fift

ne

(c) Limited Company-two or above.

owners with limited ability Co-operativa Society two o Cove owners who are also. membersofthesocieby

Special characteris

(1) Private owner site

Dusiness S controlled by

*

DOS

LOTUS 123.

The method used is:

stepwise retinement.

(4) Complicated step is broken, ap”

simpler steps

The procedure may be represented by the flowchart below.

the private individual ane gusiness is rin at his wh Will

(2) The business aims at paking profit) though some in my consider other aim but profit. is still the major concern. (3) The size of the bus mess verías

among the firms and to absolutes., rules in determining the size. pr. scale. This means it, ist possible for us to have a very. hic company which is owned one person, whereas 6 company of the form at 1imited company

This type of bus gess Private unit) is the feature of

share of our demands.

Exples

nient stores! proprietorship.

Accounting Firmi

HO

GOTC 100

90 PRI

NO. REAL ROO

100 END

Telephone

pub

Company

imited

Co-

iciaty?

terms:

Company

ARIES

as public limited comp

phool not be mixed up with

public enterprise which is publ

Private Company

ic means private fumitoo *Limited's

it refers to the Liability and

not the size Limited Liability?

the means.

the

Owners! responsibility of the find's debu

Simited to his capital being untaken,

Unlimited Liability!

Trocaus Leo, owner's personal

assets, may be used to pay the company's debts.

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