As more offices adopted LANs, a new trend toward distributed processing in client-server configurations picked up momentum. Mitsubishi Electric announced its Apricot client-server computer series in April 1991 to implement these client-server configurations. The series consisted of servers — FT servers, and client machines — Qi workstations and LAN terminals. This article describes the Qi workstations and LAN terminals.
Qi workstations were client computers with a high-performance CPU and a high-performance bus architecture. Qi workstations had the following features.
- The high-end model was standard equipped with a high-performance Intel 32-bit i486 (25 MHz) CPU and 128 KB of external cache memory, and the entry-level model used an inexpensive 32-bit 386SX (16 MHz) CPU.
- The workstations had a high-performance 32-bit MCA (micro channel architecture) bus and four expansion slots (two 32-bit slots and two 16-bit slots).
- The computers’ open architecture included a VGA (video graphics array) display control module and the DOS J 4.0/V operating system
- The workstations came with NetWare and LAN Manager, highly rated standard networking OSs,.
- The included security system had such features as infrared security card-protected logins and screen-blanking.
The LAN terminals were designed specifically as client computers. They had the following features.
- Slim, compact form factor (323 x 350 x 57 mm (w x d x h)).
- An Ethernet controller was mounted on the motherboard as standard equipment.
- Packaged with DOS J4.0/V, NetWare, and LAN Manager.
- Used an Intel 32-bit 386SX (16 MHz) CPU.
| CPU | Processor | 32-bit i486 microprocessor (25 MHz) | |||
|---|---|---|---|---|---|
| High-speed math coprocessor | Built in the CPU | ||||
| Memory | Cache memory | External cache: 128 KB Internal CPU cache: 8 KB | |||
| ROM | 128KB | ||||
| RAM | 4 MB (expandable up to 16 MB in increments of 4 or 8 MB) | ||||
| Video RAM | 512KB | ||||
| Storage memory devices | Flexible disk drive | One 3.5-inch drive (1.44 MB) | |||
| Hard disk drive | Capacity | 100MB | 200MB | 305MB | |
| Access time | 17ms | 15ms | 12.5ms | ||
| Display device | 64KB | 32KB | 64KB | ||
| Internal streaming tape unit | 120MB (optional) | ||||
| Display device | Display method | 14-inch color monitor (optional), analog RGB | |||
| Display colors | VGA specification, 16 colors from a 262,144-color palette | ||||
| Japanese mode | Resolution: 640 x 480 pixels Japanese: 40 characters x 25 lines, 16 x 19 pixels Alphanumeric: 80 characters x 25 lines, 8 x 19 pixels | ||||
| English mode | Resolution: 640 x 480 pixels Alphanumeric: 80 characters x 30 lines, 8 x 16 pixels | ||||
| Kanji font file | ~7,300 characters including standard JIS Level 1 and Level 2 characters | ||||
| Keyboard | 106 keys, JIS layout | ||||
| Mouse (optional) | Two-button PS/2 mouse | ||||
| Interfaces | RS-232C | D-sub 25 pin, asynchronous | |||
| Printer | Centronics interface | ||||
| LAN (optional) | Ethernet or token ring | ||||
| Expansion slots | Four slots (two 32-bit slots, one 16-bit slot, one 16-bit video slot) MCA bus | ||||
| Power supply | AC 100V±10%,50Hz/60Hz | ||||
| Power consumption | 320VA | ||||
| External dimensions [mm] | 396×430×130 (w x d x h) | ||||
| Weight | 7.5kg | ||||
| CPU | Processor | 32-bit 386SX microprocessor (16 MHz) | ||
|---|---|---|---|---|
| High-speed math coprocessor | 387SX(16MHz)Processor (optional) | |||
| Memory | ROM | 64KB | ||
| RAM | 1 MB (expandable up to 8 MB in increments of 1, 2, 4, or 7 MB) | |||
| Video RAM | 256KB | |||
| Storage memory devices | Flexible disk drive | One 3.5-inch drive (1.44 MB) | ||
| Hard disk drive | Capacity | 50MB | ||
| Access time | 17ms | |||
| Display device | 64KB | |||
| Display device | Display method | 14-inch color monitor (optional), analog RGB | ||
| Display colors | VGA specification, 16 colors from a 262,144-color palette | |||
| Japanese mode | Resolution: 640 x 480 pixels Japanese: 40 characters x 25 lines, 16 x 19 pixels Alphanumeric: 80 characters x 25 lines, 8 x 19 pixels | |||
| English mode | Resolution: 640 x 480 pixels Alphanumeric: 80 characters x 30 lines, 8 x 16 pixels | |||
| Kanji font file | ~7,300 characters including standard JIS Level 1 and Level 2 characters | |||
| Keyboard | 106 keys, JIS layout | |||
| Mouse (optional) | Two-button serial mouse | |||
| Interfaces | RS-232C | D-sub 25 pin, asynchronous | ||
| Printer | Optional | |||
| LAN | Ethernet, standard | |||
| Power supply | AC 100V±10%,50Hz/60Hz | |||
| Power consumption | 80VA | |||
| External dimensions [mm] | 323 x 350 x 57 (w x d x h) | |||
| Weight | 5.2kg | |||



