# Silent 700

> line of Texas Instruments portable computer terminals (1970s and 1980s)

**Wikidata**: [Q3483826](https://www.wikidata.org/wiki/Q3483826)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Silent_700)  
**Source**: https://4ort.xyz/entity/silent-700

## Summary
The Silent 700 was a line of portable computer terminals manufactured by Texas Instruments during the 1970s and 1980s. Designed for remote data entry and communication, these terminals operated without a traditional monitor, instead using a built-in thermal print mechanism to display output. They were widely used in industries requiring mobile data processing, such as healthcare and finance.

## Key Facts
- **Manufacturer**: Texas Instruments.
- **Active Period**: 1970s–1980s.
- **Primary Function**: Portable data entry and communication terminal.
- **Key Feature**: Acoustic coupler for dial-up modem connectivity.
- **Output Method**: Thermal print mechanism (silent operation).
- **Classification**: Instance of "computer model series" and subclass of "computer terminal."
- **Design Focus**: Portability and low noise ("silent" operation).

## FAQs
### Q: Who manufactured the Silent 700 terminals?
A: The Silent 700 was produced by Texas Instruments, a leading electronics company known for innovations in computing and telecommunications.

### Q: How did the Silent 700 display information without a screen?
A: It used a thermal print mechanism to produce physical paper output, eliminating the need for a traditional monitor and ensuring silent operation.

### Q: What made the Silent 700 portable for its time?
A: Its compact design and self-contained features (e.g., acoustic coupler, internal printer) allowed users to work remotely, a significant advancement in the pre-laptop era.

## Why It Matters
The Silent 700 played a pivotal role in the evolution of portable computing, addressing the mid-20th-century need for mobile data entry and transmission. By integrating a printer, modem, and keyboard into a single device, it enabled professionals to work outside traditional office settings, revolutionizing industries like healthcare, finance, and logistics. Its "silent" thermal printing technology reduced noise pollution in workplaces, setting a precedent for user-centric design. As one of the earliest commercially successful portable terminals, it bridged the gap between mainframe systems and later personal computers, demonstrating the practicality of on-the-go computing solutions.

## Notable For
- **Acoustic Coupler Integration**: Allowed connection to telephone lines for dial-up data transmission, a cutting-edge feature at the time.
- **Silent Thermal Printing**: Produced hard-copy output quietly, a stark contrast to noisy dot-matrix or teletype printers.
- **Self-Contained Portability**: Combined keyboard, printer, and modem in a single unit, eliminating the need for external peripherals.
- **Industry Adoption**: Widely used in medical, financial, and industrial settings for tasks like remote database updates and transaction processing.

## Body
### Design and Features
The Silent 700 featured a compact, ruggedized design with a QWERTY keyboard, thermal printer, and acoustic coupler for dial-up connectivity. Its thermal print mechanism produced alphanumeric characters on heat-sensitive paper, ensuring silent operation—a key selling point in noise-sensitive environments like hospitals or libraries.

### Technical Specifications
- **Print Speed**: Up to 30 characters per second (model-dependent).
- **Modem Capability**: 300 baud acoustic coupler for telephone line data transmission.
- **Power Source**: Typically operated via AC power or optional battery packs for full mobility.

### Historical Context
Released during the 1970s–1980s, the Silent 700 capitalized on the growing demand for remote data processing as computing systems decentralized from mainframes. It competed with terminals like the Lear Siegler ADM-3A but distinguished itself through its integrated printing and portability. The line was eventually phased out as personal computers and liquid-crystal display (LCD) technology became cost-effective in the late 1980s.