CT-555 - Calculator CITIZEN - Free user manual and instructions

Product Type	Calculator
Brand	Citizen
Model	CT-555
Display	8-digit LCD
Power Source	Battery (LR54) and solar panel
Dimensions	Approx. 10.0 x 6.5 x 1.5 cm
Weight	Approx. 50 g
Basic Functions	Addition, subtraction, multiplication, division
Additional Functions	Percent, square root, memory (M+/M-/MR/MC)
Keyboard	Plastic keys with tactile feedback
Auto Power Off	Yes, after approximately 7 minutes of inactivity
Case Material	ABS plastic
Maintenance	Clean with a dry, soft cloth. Do not use solvents.
Safety Precautions	Keep away from water and extreme temperatures. Do not disassemble.
Repairability	Not user-serviceable. Contact authorized service center.
Included Accessories	User manual, battery (installed)
Warranty	1 year limited warranty

Frequently Asked Questions - CT-555 CITIZEN

How do I replace the battery in my Citizen CT-555?

Open the battery compartment on the back using a small screwdriver. Insert a new LR54 battery with the correct polarity (+/-). Close the compartment securely.

Why is the display showing dim or no numbers?

Check if the solar panel is getting sufficient light. If not, ensure the battery is fresh and correctly installed. Press the ON/AC button to reset.

How do I clear the memory?

Press the MC (Memory Clear) button to erase the stored value. Use MR to recall the current memory.

Can I perform percentage calculations?

Yes, use the % key. For example, to find 20% of 150, press 150, then *, then 20, then % to get 30.

What does the 'E' error mean on the display?

The 'E' indicates an overflow or division by zero. Press ON/AC or CE to clear the error and re-enter the calculation.

How do I calculate a square root?

Enter the number and then press the √ (square root) key. The result will be displayed.

Is the calculator waterproof?

No, it is not waterproof. Keep the calculator dry and avoid exposure to moisture to prevent damage.

How long does the battery last?

Under normal usage, the battery can last approximately 2 years. The solar panel helps extend battery life in bright conditions.

Can I use rechargeable batteries?

It is recommended to use standard alkaline LR54 batteries. Rechargeable batteries may have a different voltage and could affect performance.

What should I do if keys become stuck?

If a key sticks, gently clean around it with a dry, soft cloth. Do not use liquid cleaners. If the problem persists, contact support.

USER MANUAL CT-555 CITIZEN

RANTICENTORY INVESTORS AND QUOTATIONS

DANE TECHNICZNET FUNKCJE OBLICZENIOWE:

FEATURES: 1. Battery and solar powered calculator. 2. 11-GPS FEM liquid crystal display. 3. Algebraic mode. 4. Auto-power-off function. 5. 12 ways slower function. 6. Tax calculation. 7. 120 Steps check & correct function KEY/SWITCHSYMBOLS IDENTIFICATIONS [ON/AC] - Power small close key [ON/C] - Clear carry key/Close key [On+] - Memory plan key [On-1] - Memory minus key [ON/C] - Memory small key/slower key [ON+] - Mark up key [ON] - Double zero key [O] - Square root key [O/O] - Auto spray key [O/O] - Step by step check forward-a-b-c-det [O/O] - Step by step check forward-a-b-c-det [O/O] - Step by step check shift-right key [IM] - Memory loaded EL - Overflow-over EL1 - Set rate/Percent key [TAX+] - Anxious without tax. [TAX-] - Anxious with tax. TAX - TAX [TAX/N] - Test rate

m = 311

m = 311

语句	按键环节	注意事项
Cortonyu Przykhid Ekserpel Dpurap	KEY Operasi PRZYCISK(1—drainatie TAST funktion Owermais KLABILIIA ملفرع المُحْمَةِ)	Patterson Wytozellenie Display Alocmola شاتنا
2546	2 [a] [2 (ECB) 3 (a)]	6
25667	2 [a] [a] [b] [c]	63

1. Overflow/Sobrecapacidad de error/Dépassement/Erro de excesso/Überlaut/Overflow/Overvlocie/盗弔/Overflow/Przepelnienie/

123456789012	123456789012		123456789012
x100014	[a] 10009 [a]	+E	1234.56789012
1*234.56789012	[CE/C] [CE/C]	C	0.
	9[-] 0 [-]	+E	0.
9-0	[CE/C]	C	0.

Calculation examples/Exemplos de cálculos/Exemples de calculo /Exemplos de cálculo/Beispiele für die berechnung/Esempi di calcoli/Reken voorbeelden/运算克例/Berhitungecontonya /Przyklady obliczeń/Beregnings-eksempler/Примеры вычисления/ПАРАДЕНГМАТА ПРАЭЕОУ УПОАОГТЗМОУ (إمّل التрисب)

1. Addition Subtraction/Addiction y Substracción/Addition Soustraction/soma e subtraction/Addieren und subtrahieren/Addizione e sotrazione/Optellen Afrekken/2016/Menaubahan Dan Mengurangan/Dodawanie i odejmowani/Addition Subtraction Допози metersное питание/Проботем км ополрем/п together

6+4+7.5=17.5	6[=]4[=]7.5[=]	-	17.5
3.6+4~7	3[=]6[=]4=1	-	7

1. Multiplication and Division/Multiplicación y División/Multiplication et Division/Multiplicação e Divisão/Multiplizieren Und Dividieren/Multiplicazione e divisione/Vermenigvuldigen en Deles/森玲/Mengalian dan membaguan/Mnozenie i dzielenie/Multiplikation og division/Umpošenie u Delene?

الشرب الحصيل والتقديم 5 (n) 3 (+) 0.2 (=) 8 (+) 4 (n) 3.7 (+) 9 (=) = 10.4

3 Constant/Constant/Constant/Constant/Constant/Constant/Constant/Konstant/Stable/Konstant/Horizontal/Xp-pn multiplicity
2+3=5	2[1+3][-]	= 5.5
4+3=7	4[-]	= 7
1+2=1	11[12][-]	= .1
1-2=0	2[-]	= 0
2+3-12	3[314][-]	= 12
26-18	6[-]	= 18
8+4=2	8[1+4][-]	= 2
1+4-13	7[-]	= 1.75

30%27%-81 30% [6] 27 [%] % 81 11.2% [10%-29%] 11.2 [-] 56 [%] % 29

300+(300x419)(=12)	300 [×] 40 [%]	0	421
300+(300x007)=190	300 [1-40 [%]	%	180
1400x124=168	1400 [×] [2 [%]]	%	168
1400x15%=210	15 [%]	%	210

1. Power & Reciprocal/Potencia e inversa /Puissance & Réciproque /Torça e Reciprocidade /Leistung & Réciproke/Power& Reciproco /Machtsverbeffen & Onkeren/乘幂与倒数/Berlaya dan Timbal balik/Fotça i odwrotnoó/Strom & Tbilagestromning/Bключение u ofparrone/Exitérç & avnortrophij

5^4 = 625	5( x) n + 1 n	=	625
1/2 = 0.5	2( 1 - 1) 1	-	0.5
12x^3 + 2 = 0.125	2( x) 3( 1) 2( 1) 1	-	0.125

1. Memory calculation/Cálculo con memoria/Calcul de rémoire/Cálculo da Memória/Speicherberechnung/Calcolo della memoria/Gehougen berekening/亿运算/Memory berhitungan/Obliczanie z udziałem pamięci/Beregning af lukommelse/Barwiclenie namortью /l'pólódź; impóng /dākārā (sū)

9-7-8=1.3E	9[-1]7[M+]	M	1.25571428571
		M+
	8[+1]3[M-]	M	2.66666666666
		M-
	[MRC]	M	-1.39095238095
		MR
	[MRC]	MC	-1.39095238095

m = 311

m = 311

	|c C^1H^2C^3I & C^1H^2C^3I \	|c C^1H^2C^3I & C^1H^2C^3I \
	0.8 Mx	REP22.
f_(1-1)^(2000)	0.8 Mx	CRT22.
2	0.8 Mx	CRT2.
f_(1-1)^(2000)	0.8 Mx	REP2.
f_(1+1)^(2000)	0.8 Mx	REP40.
(ON/AC)		0.

Correction and overflow/Corrección y sobrecapacidad de error /Correction et dépassement/Correção e erro de excesso/Korrektur und überlauf/Correzione e overflow/Correctie en overvlocien/改正与溢载/Pembetulan dan overflow/Korygowanie blędu i przepelnienie/Korrektion og pladsmangel/Немравленное и инблювов/ДОРВКЭЗН КАЛ УПЕРХЕВАЗН/경쟁у/طلاز

1. Correction/Corrección/Correction/Corrección/Korrektur/Corrección Correctie/改正/Pemberulan/Korygowanie/Korrektion/Исправление

Example	KEY Operation	Display
Example	Operation de Tristo	Tensella
Example	Utilisation des touches	Affichage
Example	Operação da TECLA	Fusibular
Bisqial	Fosten	Aszeige
Etiempo	Funzione TASTO	Scheme
Voorbeeld	Toetson gebruik	Weergaven

Tax	[TAX+]	TAX
			9.0
Cost in $1.26 6	[CX]C	C	0.
Reduce 8% Tax	12%-5		[29.6]
	[TAX-] TAX-		120
Tax	[TAX-]	TAX	9.6
Check tax rate	[DIV/AC]		0.
	[SET] (PUSH FOR 3%RC)	TAX+
		[0%]

67-CT555-07A

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