nPr Calcola il numero di permutazioni possibili di elementi n presi in un numero r per volta.

nCr Calcola il numero di combinazioni possibili de elementi n presi in un numero r per volta.

!Calcola il fattoriale di un numero intero positivo specificato n, dove n≦69.

RANDM Genera un numero casuale fra 0 e 1.

RANDMI Genera un numero intero casuale fra due numeri interi specificati, A e B, dove A ≦ valore casuale≦ B

„Altre funzioni ( x–1, √, X ,x 2, ^ )

zLa calcolatrice fornisce anche le funzioni reciproco ( [ x –1] ),

radice quadrata ( [ √ ] ), radice universale([ X ] ), quadrato ( [ x 2 ] ), e elevamento a potenza. ( [ ^ ] ). Vedi Esempio 47~50.

„Conversione di Unità

zLa calcolatrice ha una caratteristica incorporata per la conversione delle unità metriche in unità inglesi e viceversa. Vedi Esempio 51.

1.Digitare il numero da convertire.

2.Premere [ 2nd ] [ CONV ] per attivare il menù. Ci sono 7 menù, che coprono distanza, area, temperatura, capacità, peso, energia, e pressione.

3.

Usare [

] [

] per scorrere attraverso la lista delle unità

 

fino a

quando

compare il menù adatto delle unità, quindi

 

[

].

 

 

4.

Premendo [

] o [ ] si può convertire il numero in un’altra

 

unità.

 

 

 

„Costanti fisiche

zSi può usare i numeri delle costanti fisiche nei calcoli. Vedi tabella sotto :

Simbolo

Significato

Valore

c

Velocità della luce nel vuoto

299792458 m / s

g

Accelerazione di gravità

9.80665 m.s –2

G

Costante gravitazionale

6.6725985 x 10 –11N.m 2 kg –2

Vm

volume molare del gas ideale

0.0224141 m 3 mol –1

NA

Numero di Avogadro

6.022136736 x 10 23 mol –1

e

Carica elementare

1.6021773349 x 10 –19C

me

Massa degli elettroni

9.109389754 x 10 –31kg

mp

Massa dei protoni

1.672623110 x 10 –27kg

h

Costante di Planck

6.626075540 x 10 –34J.s

k

costante di Boltzmann

1.38065812 x 10 –23J.K –1

I – 14

File name : CBM_SR285,A_HDBSR285T19_Italian.doc

version : 2010/04/26

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Citizen SRP-280N/SRP-285N manual „ Altre funzioni x-1, √, X ,x, „ Conversione di Unità, „ Costanti fisiche
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SRP-280N, SRP-280N/SRP-285N specifications

The Citizen SRP-280N and SRP-285N are both advanced thermal printers designed to meet the needs of various industries, including retail, hospitality, and logistics. Known for their reliability and performance, these models are particularly favored for their speed and efficiency in printing receipts and labels.

One of the standout features of the SRP-280N is its high-speed printing capability. It can produce printouts at an impressive rate of 200 mm per second, ensuring that businesses can process transactions quickly, which is crucial during peak hours. Similarly, the SRP-285N offers rapid printing speeds, making it ideal for environments where time is of the essence.

Both models utilize direct thermal printing technology, which eliminates the need for ink or ribbons, reducing maintenance costs and downtime. The printers are equipped with easy-to-load paper mechanisms, allowing users to quickly replace paper rolls with minimal disruption to workflow. This feature is particularly advantageous for high-volume settings where efficiency is paramount.

The Citizen SRP-280N and SRP-285N support a variety of paper widths, making them versatile for different printing tasks. The models can handle standard thermal paper rolls, commonly used for receipts, as well as labels, catering to diverse business requirements. This flexibility is further enhanced by the compatibility of both printers with various operating systems, including Windows and Android, ensuring seamless integration into existing systems.

Connectivity is another key aspect of the SRP-280N and SRP-285N offerings. Both printers come equipped with multiple interface options, including USB, Ethernet, and Bluetooth, allowing users to connect to various devices seamlessly. This feature is particularly useful for businesses adopting mobile payment systems or those needing to connect multiple devices to a single printer.

Additional characteristics of these models include a compact design that saves counter space, as well as robust construction for durability in demanding environments. They also feature an energy-efficient design, contributing to lower power consumption while operating, aligning with modern needs for sustainability.

Overall, the Citizen SRP-280N and SRP-285N printers combine speed, versatility, and durability, making them an excellent choice for businesses that require reliable printing solutions. With their advanced technology and thoughtful design, these printers can significantly enhance operational efficiency in any setting.
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