CASIO fx-991CW Standard Non Programmable Scientific Calculator - (Black) 3 Years Warranty
The Casio CW is a non-programmable, non-graphing scientific calculator built for school and exam use. It features a high-resolution natural-textbook dot-matrix LCD (10+2 digits) with an icon menu, plastic keys, and solar + battery power (approx. 2-year battery life) with auto power-off. Despite exam compliance (GCSE/AS/A Level/SSC/HSC), it packs advanced tools—matrices, vectors, complex numbers, base-n and logic, calculus (diff/integration), SOLVE, statistics with regressions, spreadsheet/numeric table—plus 9-variable memory, QR code connectivity, and a protective hard case.
Delivery inside Dhaka within 2 days Outside Dhaka 3-5 Days.
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COD available.
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Basic Information
- Product features
Non
Programmable
Non
Graphing
- Product type
Non
Programmable
Non
Graphing
- Number of digits
10 + 2 digits
- Liquid crystal display
Natural textbook display
Icon menu
Dot matrix display
High Resolution
4-gradation display
- Key characteristics
Plastic keys
- Key functions
Negative Sign
Power Off
- Memory
Variables: 9
Variables List
Answer Memory
Function memory
Memory Protection
Reset Function
- Power supply
Solar & Battery
Approximate battery life
Main 2 years
Auto Power Off
- Size (D × W × H)
162 × 77 × 10.7 mm
- Weight
95 g
- Accessories
Hard Case
- Display format settings
- Key characteristics
Plastic keys
- Key functions
Negative Sign
Power Off
- Memory
Variables: 9
Variables List
Answer Memory
Function memory
Memory Protection
Reset Function
- Power supply
Solar & Battery
Approximate battery life
Main 2 years
Auto Power Off
- Size (D × W × H)
162 × 77 × 10.7 mm
- Weight
95 g
- Accessories
Hard Case
Number
Format: Fix
Number
Format: Sci
Number
Format: Norm
Engineering
Symbol
Engineering
Notation
Fraction
/ Decimal Conversion
Angle
Unit (Degree, Radian, Gradian)
Improper/Mixed
Fraction
Sexagesimal/Decimal
Conversion
Digit Separator
Calculation Functions
- Basic calculation
Basic
Calculation
Bracket
Calculation
Fraction
Calculation
Degree,
Minute, Secound (Sexagesimal) Calculations
Reciprocal
Calculation
Percent
Calculation (scientific calculator function)
Ratio
calculation
Factorial
Function
π
Calculation
with √ and π
Rounding
Function
- Advanced calculation
Transcendental
number: e
Base-n
calculation
Logical
Operators
Complex
number calculation
Matrix
calculations
Vector
calculations
Ratio
calculation
Spreadsheet
Numeric
Table
Simultaneous
Equation
Polynomial
Equation
Inequality
Calculations
List
based STAT-data editor
1-Variable
statistics
2-Variable
statistics and regression
Distribution
Calculations
Mathbox
(Coin Toss, Dice Roll)
- Applied calculation
Continuous
Calculation
Replay
Function
Multi-replay
Function
UNDO
SOLVE
Function
Functions Features
- Basic functions
Basic
Mathematical Functions
Independent
Key x
Absolute
Value Calculation
Square
and square root (x2/√)
Power
and radical root (xy/x√)
Trigonometric,
inverse trigonometric (sin/cos/tan/sin–1/cos–1/tan–1)
Hyperbolic,
inverse hyperbolic (sinh/cosh/tanh/sinh–1/cosh–1/tanh–1)
Exponential,
logarithmic (log, ln, 10x, ex)
Base
specified logarithmic
Coordinate
Conversion
Combination
/ Permutation
Prime
Factorization
Random
Number Generation
Random
Integer Generation
Summation
Differentiation
Calculation
Integration
calculation
- Physics- and chemistry-related functions
Scientific
Constants
Metric
conversion function
Statistical Functions
- Statistical data
List
based STAT-data editor
Exam Compatibility
- Permitted in exams
GCSE/AS/A
Level/SSC/HSC
Peripheral Devices
- Connection to peripheral devices
QR Code
Authenticity
Check
ক্যাসিও CW একটি অ-প্রোগ্রামেবল, অ-গ্রাফিং বৈজ্ঞানিক ক্যালকুলেটর, স্কুল ও পরীক্ষার জন্য উপযোগী। এতে আছে হাই-রেজোলিউশন ন্যাচারাল টেক্সটবুক ডট-ম্যাট্রিক্স ডিসপ্লে (১০+২ ডিজিট) ও আইকন মেনু, প্লাস্টিক কী, সৌর + ব্যাটারি পাওয়ার (প্রায় ২ বছরের ব্যাটারি লাইফ) ও স্বয়ংক্রিয় পাওয়ার-অফ। GCSE/AS/A Level পরীক্ষায় অনুমোদিত এই মডেলে ম্যাট্রিক্স, ভেক্টর, কমপ্লেক্স সংখ্যা, বেস-n ও লজিক, ডিফারেনশিয়েশন/ইন্টিগ্রেশন, SOLVE, পরিসংখ্যান ও রিগ্রেশন, স্প্রেডশিট/নিউমেরিক টেবিলসহ বিস্তৃত ফাংশন রয়েছে। ৯টি ভেরিয়েবল মেমরি, QR কোড সংযোগ ও সুরক্ষার জন্য হার্ড কেস—সব মিলিয়ে এটি পড়াশোনা ও পরীক্ষার জন্য একটি শক্তিশালী অল-রাউন্ডার।
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