It could be expanded with RAM ( memory ) and ROM ( software ) modules, as well as peripherals like bar code readers, microcassette and floppy disk drives, paper-roll thermal printers, and miscellaneous communication interfaces ( RS-232, HP-IL, HP-IB ).

The CPU's microcode includes a debugger: firmware with a direct serial interface ( RS-232 or current loop ) to a terminal.

When electronic terminals ( smart and dumb ) began to be used, they were often designed to be interchangeable with teletypewriters, and so supported RS-232.

Because the application of RS-232 has extended far beyond the original purpose of interconnecting a terminal with a modem, successor standards have been developed to address the limitations.

Issues with the RS-232 standard include:

PCI Express x1 card with one RS-232 port

Compared with RS-232, USB is faster, uses lower voltages, and has connectors that are simpler to connect and use.

Devices that convert USB to RS-232 may not work with all software on all personal computers and may cause a reduction in bandwidth along with higher latency.

Serial ports with RS-232 are also commonly used to communicate to headless systems such as servers, where no monitor or keyboard is installed, during boot when operating system is not running yet and therefore no network connection is possible.

Upper Picture: RS-232 signalling as seen when probed by an actual oscilloscope ( Tektronix MSO4104B ) for an uppercase ASCII " K " character ( 0x4b ) with 1 start bit ( always ), 8 data bits, 1 stop bit and no parity bits ( 8N1 ) Lower Picture: Same signal was inputted into an RS-232 to UART converter, the output is depicted.

These also protect the device's internal circuitry from short circuits or transients that may appear on the RS-232 interface, and provide sufficient current to comply with the slew rate requirements for data transmission.

Use of a common ground limits RS-232 to applications with relatively short cables.

The back had all of the same ports as the Tandy 1000, except that the light pen port was replaced with an RS-232 serial port.

Modern meters may be interfaced with a personal computer by IrDA links, RS-232 connections, USB, or an instrument bus such as IEEE-488.

Although the terms are most commonly used with RS-232, several data communications standards define different types of interfaces between a DCE and a DTE.

Data transmission is utilized in computers in computer buses and for communication with peripheral equipment via parallel ports and serial ports such us RS-232 ( 1969 ), Firewire ( 1995 ) and USB ( 1996 ).

Some systems provide user interface remotely with the help of a serial ( e. g. RS-232, USB, I²C, etc.

Native RS-232 data interface with proprietary pinout adapter.

Native RS-232 data interface with proprietary pinout adapter.

Perhaps the final 7-bit restriction, primarily imposed due to the pervasive use of RS-232 protocol for serial ports between devices, notably computers and modems, was lifted in the mid-1990s when RS-232 was largely replaced with Ethernet and with USB.

Commonly used electronic devices which are found in practically every hospital are closed-circuit TV and audio systems for internal paging and instruction, along with radiation counters, timers, and similar devices.

The major defensive problems are concerned with the possibility of overt military delivery of biological agents from appropriate disseminating devices.

For example, the BBB has reported it was receiving four times as many inquiries about quack devices and 10 times as many complaints compared with two years ago.

It is clear from this discussion that cosmologists of every persuasion look hopefully toward the day when a man-made satellite can be equipped with optical devices which will open up new vistas to science.

This allows digital devices to communicate with each other and to process, store, and communicate character-oriented information such as written language.

Assistive technology or adaptive technology ( AT ) is an umbrella term that includes assistive, adaptive, and rehabilitative devices for people with disabilities and also includes the process used in selecting, locating, and using them.

It is part of the field of biomechatronics, the science of using mechanical devices with human muscle, skeleton, and nervous systems to assist or enhance motor control lost by trauma, disease, or defect.

Assistive technology devices can be simple, or " low-tech ", or they may use highly advanced technology, with some even using computers.

More complex assistive technology devices have been developed over time, and as a result, sports for people with disabilities " have changed from being a clinical therapeutic tool to an increasingly competition-oriented activity ".

As with displays and instruments, critical devices that were electro-mechanical had a finite life.

In common speech the word artillery is often used to refer to individual devices, together with their accessories and fittings, although these assemblages are more properly referred to as equipments.

* In the mid-1970s several armies started equipping their artillery observation teams with laser rangefinders, ground surveillance radars and night vision devices, these were soon followed by inertial orienting and navigating devices to improve the accuracy of target locations.

Some people with albinism do well using bifocals ( with a strong reading lens ), prescription reading glasses, and / or hand-held devices such as magnifiers or monoculars.

Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances ( using short-wavelength radio transmissions in the ISM band from 2400 – 2480 MHz ) from fixed and mobile devices, creating personal area networks ( PANs ) with high levels of security.

One master may communicate with up to 7 slaves in a piconet ; all devices share the master's clock.

A master Bluetooth device can communicate with a maximum of seven devices in a piconet ( an ad-hoc computer network using Bluetooth technology ), though not all devices reach this maximum.

Such devices can link computers with Bluetooth with a distance of 100 meters, but they do not offer as many services as modern adapters do.

Interiors may be fitted out for exhibition or information purposes with special equipment and / or audio visual devices.

Researchers are experimenting with devices to detect the existence of a threat:

It is specifically designed to work with each particular model of computer, interfacing with various devices that make up the complementary chipset of the system.

We may take her with us -- to California.

-- liberal considers that the need for a national economy with controls that will assure his conception of social justice is so great that individual and local liberties as well as democratic processes may have to yield before it.

Among Bourbons the racial issue may have less to do with their remaining unreconstructed than other factors.

Thus, to cite but one example, the Pax Britannica of the nineteenth century, whether with the British navy ruling the seas or with the City of London ruling world finance, was strictly national in motivation, however much other nations ( e.g., the United States ) may have incidentally benefited.

Yet he presents a realm of source material which may well serve other writers if not himself: the problems with which a New South must grapple in groping through a blind adolescence into the maturity of urbanization.

We are worried about what people may do with them -- that some crazy fool may `` push the button ''.

I am usually filled with an uneasiness that through some unwitting slip all hell may break loose.

Yet, after Rousseau had given the social contract a new twist with his notion of the General Will, the same philosophy, it may be said, became the idea source of the French Revolution also.

Father Murray goes back to the Declaration of Independence, too, though I may add, with considerably more historical perception.

Here there may be an analogy with cancer: we can detect cancers by their rapidly accelerating growth, determinable only when related to the more normal rate of healthy growth.

Any abilities I may have were achieved in their present shape from experience in sharing in the growth and control of my business, coupled with raising my family.

That, however, may also bring the police, if the thinking does not meet with social approval.

Like Roosevelt, he can distinguish an attitude toward a Russian leader he may share with a host of Americans from the responsibilities diplomatic convention may impose upon him.

All we want from Dr. Huxley's statement is the feeling that this is an open world, in the view of the best scientific opinion, with practically no directional commitments as to what may happen next, and no important confinements with respect to what may be possible.

It must be granted that the flouting of convention, no matter how well intentioned one may be, is sure to lead to trouble, or at least to the discomfort that goes with social disapproval.

Moreover, because of the particular blot on your family escutcheon through what may only have been one unbridled moment on your grandmother's part, and because you had the lean-to kitchen and trundle bed of your childhood to outgrow, what you obviously most desired with both your conscious and unconscious person, what you bent your whole will, sensibility, and intelligence upon, was to be a lady.

The United States is always ready to participate with the Soviet Union in serious discussion of these or any other subjects that may lead to peace with justice.

He may be the only song writer ever to have collaborated with a secretary of the U. S. Treasury ; ;