Review: Sharp ELW516T
Essentials
Company: Sharp
Year: 2017
Type: Scientific, 4 line display
Power: Solar
Statistics: 1
and 2 Variables
Other: Distributions, Conversions, Constants,
Matrices, Vectors, Solver
Operating
System: Algebraic
Number of
Memory Registers: 9
Cost: approximately $18.00
I
purchased the calculator at my university bookstore.
Introduction
The
ELW516T is a spiritual update of Sharp’s ELW516 model. The arrow keys are trapezoidal and slightly
enlarged, the keys are no longer glossy, and the placements on the keyboard for
some features are different (examples are the calculus functions d/dx, ∫ dx,
Σ).
What
I like about the ELW516T is that you can set the WriteView mode to either show
exact values or show all answers in approximate decimals. In approximate mode, only decimal answers and
fractions will be shown. If you want
answers in terms of square roots (radicals) or π, you will need to be in exact
mode. In earlier models, exact was the default.
The
display is still four lines and very crisp.
The processing speed of the ELW516T is about the same as its
predecessor, which is still decent and fast.
It took about 27 seconds to calculate Σ(1/(x^2), x, 0, 500).
The
ELW516T carries over the statistics mode, along with the regressions, drill
mode, complex number mode, and the solve mode.
You can solve general equations (in the form of f(x) = 0), quadratic
equations, cubic equations, 2 x 2 linear systems, or 3 x 3 linear systems.
There
are several added functions to the ELW516T.
In normal mode, we get LCD, GCD, integer division, and the product of
f(x) calculus functions. In matrix mode,
we get the row echelon forms (ref and rref).
The ELW516T bumps the number of available distributions to 3, adding
Binomial and Poisson, and creates a separate mode for it. We also gain the valuable inverse normal
distribution function.
However,
not everything from the ELW516X made it to the ELW516T. For instance, instead of lists, the ELW516T
has vectors. Regretfully, the formula
memory registers that the ELW516X had are not present on the ELW516T.
The
ALPHA/”3rd F” Key
The
[ALPHA] key acts more as a hybrid ALPHA/third shift key. Case in point:
[ALPHA],
[ ( ]: Integral (∫)
[ALPHA],
[ ) ]: Derivative (dx)
[ALPHA],
[ * ]: Sum (Σ)
[ALPHA],
[ ÷ ]: Product (Π)
[ALPHA],
[ 4 ]: Constants
[ALPHA],
[ 5 ]: Conversions
[ALPHA],
[ 1 ] and [ 2 ]: Engineering notation
shifts
[ALPHA],
[ 9 ]: Display AF, X, Y, and M on one
screen
Comparison Sharp ELW516 vs. ELW516T
Sharp ELW516X on the left (older), ELW516T on the right (newer) 
Here
is a side by side comparison with the new ELW516T against the previous ELW516. You can see my review for the ELW516
here: http://edspi31415.blogspot.com/2011/09/sharpelw516xreview.html
That was six years ago. Time flies! In the ELW516T column, I marked additional
functions in green and things that didn’t make it to the
ELW516T in red.
The ELW516T
(the one with the T) is the new version.

ELW516 (2011)

ELW516T (2017)

Number
of Functions, according to Sharp

556

640

Calculus

Derivative
(d/dx)
Integral
( ∫ dx)
Sum
(Σ)

Derivative
(d/dx)
Integral
( ∫ dx)
Sum
(Σ f(x))
Product (Π f(x))

Catalog

Yes

Not available

Variables

9: A, B, C, D, E, F, X, Y, M (independent)

9: A, B, C, D, E, F, X, Y, M (independent)

Formula
Memory

4: F1, F2, F3, F4

Not available

Stored
Function Memory

3: D1, D2, D3, D4

3: D1, D2, D3, no forth slot

Complex
Numbers

Arithmetic,
rectangular/polar conversion, square, cube, conjugate, absolute value

Arithmetic,
rectangular/polar conversion, square, cube, conjugate, absolute value, argument, real part, imaginary part

Bases

5: Decimal (default), Hexadecimal, Binary,
Octal, Pental (base 5). Logic
operations AND, OR, XOR, NOT, XNOR included in nondecimal modes.

5: Decimal (default), Hexadecimal, Binary,
Octal, Pental (base 5). Logic operations AND, OR, XOR, NOT, XNOR included in
nondecimal modes.

Number
of Regressions

7: Linear (a+bx), Quadratic (a+b+cx^2),
Exponential (a*e^(bx)), Logarithmic (a+b*ln x), Power (a*x^b), Inverse (a +
b/x), Geometric (a*b^x)

7: Linear (a+bx), Quadratic (a+b+cx^2),
Exponential (a*e^(bx)), Logarithmic (a+b*ln x), Power (a*x^b), Inverse (a +
b/x), Geometric (a*b^x)

Numeric
Functions

%
(divided by 100), log_a

%
(divided by 100), log_a, GCD, LCM, iPart, fPart,
int÷

Price
Factorization

No

Yes

Number
of Conversions

44

44

Number
of Constants

52

52

Table
Function

No

Up to 2 functions in the form of f(x), table can be scrolled

Polynomial
Solver

Quadratic,
Cubic

Quadratic,
Cubic

Simultaneous
Equations

2
x 2 system, 3 x 3 system

2
x 2 system, 3 x 3 system

Matrix
Size Limit

4
x 4, 4 matrices

4
x 4, 4 matrices

Matrix
functions

Inverse,
determinant, transpose, identity, fill, random matrix, cumulative matrix,
augment 2 matrices

Inverse,
determinant, transpose, identity, fill, random matrix, ref, rref
(cumulative matrix, augment are not available)

Approx/Exact

Exact
by default, press [CHANGE] for approximate

Can be set up

Random
functions

Random
number, dice roll, coin toss, random integer

Random
number, dice roll, coin toss, random integer

Distributions

Normal
(area only) – in Statistics Mode

Distributions
gets their own mode: Normal and inverse, Binomial, Poisson

Lists

List
functions

Not available (gets replaced with Vector Mode, see below)

Vectors

Not
available

Vectors: 4 vectors up to 3 elements each: dot product, cross
product, angle between vectors, unit vector

Home
Button: automatically switch to Normal Mode

No

Yes

Final Verdict
Sharp
has revamped the ELW516 line with the ELW516T. I like the additional functions and the new
vector and table modes. The only thing
that I wish Sharp didn’t drop was the definable function registers. Sharp instead kept the quick functional slots
(D1 – D3) instead.
For
me, the nonglossy keys are a plus, but this is a personal preference.
Overall,
the ELW516T is a good calculator to consider purchasing.
Eddie
This
blog is property of Edward Shore, 2017
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