IBM 1483DSV manual Keyboard Operations, Typical Formatted Screen

Operating Procedures

Protected Field	Cursor	Unprotected Field (Entry)
		Mark Unprotected Block Selected

+	ORDER #	+
		+		ABC CO 314
+	NAME
+	PART #	+	705163–12

Alphanumeric Field

Numeric Field

Attribute Character

(not displayed)

Figure 4-1. Typical Formatted Screen

Unprotected fields are classified as either alphanumeric or numeric. Alphanumeric fields can accommodate both alphabetic and numeric data characters. Numeric fields are controlled by the application program so that attempts to enter characters other than digits 0 through 9, a period, a Dup key, or a minus sign result in an error. On international keyboards, the comma can be entered instead of the period. The display station with a Data Entry keyboard automatically shifts into Numeric mode whenever the cursor enters a numeric field.

Data characters in unprotected fields also can be displayed as intensified (brighter) fields. In applications requiring the use of confidential information, both the protected and unprotected fields can be programmed to be nondisplayed fields.

Note: Use of nondisplayed fields precludes visual verification of entered data before transmission to the CPU.

Before you can begin to enter data characters, the display station must access the CPU and its application program. Access is usually achieved by using the Attention, Program Access (PA), Function (F), Clear, or Enter key, or through a series of sign-on commands and programmed CPU responses. This series is initiated when the display station comes online. Contact your supervisor or refer to a system user’s guide for appropriate program accessing procedures.

Keyboard Operations

The description of keystroke functions and operations initiated from the keyboard in this section applies to display stations with 102/103-key, 104-key, or 122-key keyboards attached. If symbols are different from keyboard to keyboard, all are illustrated in the text. The symbols for each function can be found on the keyboard attached to the display. Remember that legends that appear on the key face are Alt functions and legends that appear on the key top can be shifted or nonshifted functions as illustrated in Figure 3-1 on Page 3-3.

4-4 701344-003