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r to fit the individual's needs u}" < vi in, < H:<;OI.KM.\ I.\«-i lllnc l.ililor, llcaU'i'M-opt' Ma^iuiiu' Want" to balance your checkbook, total up your income tax, figure out ... V rras mileage, or -iilU' vuur einld w it1* his math homework'/ Ten years ago, these tasks would have culled for several pads of scratch paper and a lot of sharp­ ened pencils. But today, with the help of a tiny electronic calcu­ lator about the size of one of those scratch pads, you can take care of all these mathematical chores a lot faster . . . and be a lot- more sure you're accurate. lixiii;: The electronic calculator is designed to make life easier for everyone who uses mathematics in his or her daily living. For the homemaker, the calculator is a faster, more accurate way of doubling a recipe, figuring out the household budget or dou­ ble-checking the super­ market check-out clerk. For the business person, it's an easier way of figur­ ing out expense accounts, or totalling payrolls. For the student, it makes math homework a breeze, helps simplify science projects and even makes it easier to work out base­ ball batting averages. And for children of all ages, the electronic calcu­ lator can be used to play a variety of numerical games that can be both fun and educational. There are two basic types of calculators: hand­ held and desk-top. The desk-top calculator is usually larger and more expensive- it is generally preferred for office usage. For home use, tire hand­ held calculator is , ideal. Many models are not much bigger than a pack of cigarettes. A few hand-held calcu­ lators come with printing features and print the K >. giMH calculation out on a strip of paper" to be kept as a permanent record. Most hand-held calcu­ lators offer the four basic mathematical functions: addition, subtraction, mul-. triplication and division. For a few dollars more, you can also get a "mem­ ory," which enables the calculator to store a past calculation, then bring it out again when needed, or an "automatic con­ stant," which allows you to multiply a series of numbers by the same num­ ber without having to re­ enter it each time. Many models also come with a percent key, to figure out percentages au­ tomatically, or a square- root key, to find the square root of a number. p o p u l a r i t y Some more complex -- and more expensive -- hand-held calculators are called "scientific" or "slide-" rule" models. They offerJa number of higher matrf-1 ematical functions such as trigonometry or loga­ rithms. Calculator technology is also turning up in a num­ ber of different forms un­ like the traditional hand­ held model. Several companies offer "checkbook" models, a small calculator with memory feature combined in a wallet-type check­ book. The calculator i£ used to enter deposits and record checks; its memory retains the balance in the account. JJOLLHRBKlSj, JANUARY .13, 14 & 15 • All Wigs 20% OFF WE SERVICE WIGS & HAIRPIECES • Sweaters 40% OFF .SKI-EVENING -FASHION • Purses SELECT GROUP Af\Q7 HU /o OFF WITH $10 PURCHASE RECEIVE FREE FIGURE CONTROL CLASS! *~[,tansfoztHati6n FINISHING/ MODELING SCHOOL & BOUTIQUE 2906 W. RTE. 120 McHENRY 344-1767 OPEN MONDAY THRU SATURDAY > Other firms are building calculators into office equipment such as calen-^ dars or notebooks, or pro­ ducing calculators in fold­ ing compacts similar to travel alarm clocks. When you^set out to shop for a calculator, be sure to determine ahead of time exactly what you'll be using it for. That way you won't wind up spend­ ing additional money on a lot of extra features you may never use. Then check to make sure the keyboard on the model you select is large enough to be handled eas­ ily, so you won't touch two keys at once: Check the power Make sure the display 'where the numbers ap­ pear) is large enough to be read easily. Also, check the calcula­ tor's power supply^ Most „ low-priced calculators are powered by throwaway batteries. But for a few dollars more you can get a rechargeable battery ^ with a much longer life, or an optional AC adapter so the calculator can be plugged into a wall socket. And be sure to. shop around before you decide to buy. Today you can find a bajfcic four-function calcu­ lator for under $15, or a more fully featured model for only n little nfore money. \V Check to make silre the store you select offers the lowest price for the model you want. Where can you buy a calculator? Almost any­ where these days: your neighborhood appliance- TV store, local department store, national discount chains, even the super­ market down the street. AH kinds of stores and all kinds of customers are getting in on today's elec­ tronic calculator boom. Wouldn't a calculator make your life a little easier? PAG£ 15 SUPPLEMENT TO McHENRY PLAINDEALER, band (PSB'Hi), with fre­ quencies from 144 to 174 MHz. These are used for vital transmisions, includ­ ing police, fire, special emergencies, tow trucks, taxicab communications. Tune in to world on multi-band There's a special breed of radio -- the multi-band -- that brings you a whole new world of broadcast sounds. They tune in on action from many or all of the following: ^ The public service high The 161.65 to 162.55 MHz section of PSB-Hi. It is tuned by all ZeriitH multi-band receivers for around-the-clock weather news and advance warn­ ings from over 90 tVHF government Weather Service stations in key WEDNESDAY, JANUARY 12, 1977 locations in the U.S. and Canada. Public service low band (PSB-Lo), with frequen­ cies from 30 to 50 MHz. Listen in here for reports of fires, highway main­ tenance crews, the forest •' • service, utility companies, and radio-paging services. The VHF-air band (108 to 135 MHz), for aircraft- to-tower,. tower-to-air- craft and aircraft-to-air­ craft communications. BOYS Infant To Size 12 GIRLS Infant To Si-ze 14 TheToddler Shop 3430 W. Elm St., McHenry, Phone 385-0746 Bankmkricmi OFF ANY ITEM IN THE STORE WITH COUPON EXCLUDING "BARGAIN BIN" LP's - INCLUDES SPECIAL ORDERS "WE'VE GOT MUSIC TO SUIT ANY TASTE" 2921 W. ROUTE 120 McHENRY 385-1122 OFFER EXPIRES JAN. 15, 1977 - MELODY MAKER RECORDS 20% OFF FOR YOU (GOOD JAN. 13-14-15, 1977. ONE COUPON REDEEMED PER PERSON PER DAY) MELODY MAKER RECORDS 20% OFF FOR A FRIEND (IF YOU DON'T HAVE A FRIEND, USE THIS YOURSELF TOMORROW) (GOOD JAN. 13-14-15, 1977. ONE COUPON REDEEMED PER PERSON PER DAY) I 1 CTy: T,J III s \ IPIlllllllsMI: ;I|l!i! ' OODfVEAR January _rv clearance # mu» W* --*• ic one-touch color. 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