BASIC APPLIED MATHEMATICS-FULL NOTES
Also its is cover the syllabus for Tanzania Education
Chapter One
CALCULATING DEVICES
Calculating device is an electronic
device used to solve mathematical expression, eg calculator, computer etc.
1.1 CALCULATOR
Calculator is an electronic device
used to carry out evaluation of mathematical expression.
Types of calculators
There are several types of
calculators but the ones used mostly are;
(i) Scientific
calculators
(ii)
Non-scientific calculators
(iii) Programmable
calculators
(iv) Non-programmable calculators
Scientific calculator is an
electronic device used for computation of mathematical expression. It is the
recommended calculator to be used in Advanced Level Syllabus.
Keys of scientific calculator
Scientific calculator has two main
keys which are;
(a) Unmarked on top keys these are
keys which have no label on top, eg (SHIFT, ALPHA, MODE, ON). Unmarked keys are
sometimes called activation keys, i.e. SHIFT, ALPHA, MODE.
(b) Marked on top keys these are keys
which have label on top, eg (all keys except unmarked keys).
Marked on top keys are categorized
into two groups which are key caps and alternate keys
Key caps these are keys labeled with
white colour on top of the key.
Alternate keys these are keys labeled
beside the key caps.
Modes of Scientific calculator
Scientific calculator has several
modes but the most applicable modes in these level are as follows
(i) CMPLX-stand
for COMPLEX mode
(ii) SD-stand
for Statistical Data mode
(iii) EQN-stand
for EQUATION mode
(iv) MAT-stand for MATRIX mode
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