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BASIC comparison sheet ProgsVarsMem Page 5

Programs, Variables and Memory

Vendor

Model

Variables

Numeric range

String variables

String too long

String literals

Character set

Lower case

Arrays

String arrays

Array dimensions

Automatic DIM

Clear variables

Programs, Variables and Memory

Sharp

PC-1500A PC-1403 PC-1280 PC-1475 PC-G850

PC-1210

PC-1211

PC-1212

PC-1245

PC-1246

PC-1247

PC-1248

PC-1251

PC-1401

PC-1421

PC-1260

PC-1261

PC-1262

PC-1350

PC-1360

PC-2500

PC-E220

PC-G820

PC-E500

PC-E500S

Fixed variables A-Z.

Single precision only Single precision only

DEFDBL/DEFSGL set default. Default is set with DEFDBL/DEFSGL.

Fixed string variables A$-Z$, 7 characters, share memory with A-Z.

N/A

Silent truncation

"String", "String "STRING", "STRING "String", "String – Trailing quote can be omitted on line end on all Sharp BASIC implementations

ASCII + symbols ASCII + japanese + symbols IBM-PC code page 437

Yes NO Yes

Single precision only. Single precision only.

N/A Two dimensions up to 255. Dimensions can be expressions.

All arrays must be defined.

CLEAR resets all fixed variables and deletes all automatic variables and arrays. CLEAR deletes all variables and arrays.

ERASE deletes selected arrays (except PC-1350.)

Fixed variables A-Z,

automatic two letter

variables. Longer names

are truncated. Undefined

variables return 0.

Fixed variables A-Z, automatic independent two letter variables. Longer names are truncated.

Undefined variables return 0.

PC-1421 has special variables for financial calculations:

n, i, PV, FV, PMT, CST, SEL, MAR, MU, NPV, IRR, PRN, INTE, BAL, SPRN, SINTE

Long variable names, case insensitive, up to

32 chars. Must not start with keyword.

Longer names are truncated. All variables

are automatic and independent. Undefined

variables return 0.

DEFDBL, DEFSGL and

suffixes # and ! allow double

and single precision.

DP variables are always

independent. A!-Z! are

identical to fixed variables A-

DEFDBL, DEFSGL and suffixes # and ! allow

double and single precision. Single and

double precision variables are independent

from each other.

BCD, 10 digits, 2 digits exponent. Internal accuracy up to 12 digits.

The PC-1211/1248 have a special symbol for the exponent (leading 1 can be omitted)

BCD,

10 digits or 20 digits,

2 digits exponent.

BCD, 10 digits,

2 digits exponent.

BCD, 10 digits or 20 digits, 2 digits

exponent.

Fixed string variables A$-

Z$, independent of A-Z.

Automatic two letter (+$)

string variables, 16

characters for all types.

Undefined string variables

return an empty string.

String variable names follow the rules of

numeric variables+$.

String length is dynamic up to 254

characters. Undefined string variables return

an empty string.

Automatic two letter (+$) string variables, 16 characters. Undefined string variables return an empty

string.

DIM Name(...) defines

array. Name is one or two

characters.

Only A()

allowed to

access A-

DIM

B(...)-Z()

define

arrays.

A() is

reserved.

DIM Name(...) defines array. Name is one or two characters.

PC-1421 has special arrays CFI and NFI with index 0..19.

DIM Name(...) defines array.

Array names follow the rules of numeric

variables.

Single or double precision

arrays are independent

Single and double precision arrays are

independent from each other.

DIM Name$(...)*L creates

string array. See right for

details.

Only A$()

allowed to

access A$-

Z$.

DIM Name$(...)*L creates string array with maximum string length L which defaults to 16.

Names follow the rules of numeric arrays+$.

Length can be an expression. Maximum string length is 80.

DIM Name$(...) defines string array.

String array names follow the rules of string

variables.

String length is dynamic up to 254

characters.

Two dimensions up to 255.

Dimensions can be

expressions.

Number and size of dimensions is only

limited by memory. Dimensions can be

expressions.

@(1) to @(26) address

variables A-Z.

A(1) to A(26) or A$(1) to A$(26) can be used to address variables A-Z if they contain the proper data type. Assigning a

value to higher index values reserves additional space.

DIM A(...) or A$(...) disables this overlap except on PC-121x and PC-1248 which reserve A(...).

PC-1421: ERASE FIN clears financial variables, ERASE deletes selected arrays.

All others: You cannot erase a single array or variable.

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